Name: Air Fryer Chicken Fajitas
Prep time: 15 min
Cook time: 15 min
Total time: 60 min
Ingredients: 1 pound boneless, skinless chicken breasts ((about 2 medium, ½- to ¾- inch thick)); 2 medium bell peppers ((about ¾ pound)); 1 medium yellow onion ((5 to 6 ounces)); 2 tablespoons neutral high-heat oil ((such as vegetable or avocado oil)); 2 tablespoons freshly-squeezed lime juice; 2 teaspoons Worcestershire sauce; 1 teaspoon Colgin mesquite liquid smoke ((see Note 1)); 1½ teaspoons mild chili powder; 1¼ to 1½ teaspoons Diamond Crystal kosher salt ((depending on your salt preferences)); 1 teaspoon ground cumin; 1 teaspoon smoked paprika; ½ teaspoon garlic powder; ½ teaspoon onion powder; ½ teaspoon ground coriander; ½ teaspoon dried Mexican oregano ((or substitute Mediterranean oregano, see Note 2)); ½ teaspoon freshly ground black pepper; ½ teaspoon light brown sugar; pinch to ½ teaspoon ground cayenne pepper ((optional for heat, see Note 3)); 6 to 8 fajita-sized flour tortillas; your favorite fajita fixings ((see Note 5 for ideas))

These Air Fryer Chicken Fajitas deliver bold, classic fajita flavor without a lot of oil. Juicy chicken strips cook alongside crisp-tender peppers and onions in one air fryer basket, with lightly charred edges. Serve them in a bowl with your favorite toppings or wrap them up in warm tortillas for an easy, festive weeknight dinner.

Four flour tortillas filled with air fryer chicken fajitas, including seasoned chicken strips, sautéed onions, and bell peppers, served on a wooden plate with lime wedges and a scoop of chunky guacamole. A bowl of extra fajita filling and sliced peppers are visible in the background.

Before You Start Cooking

Slice everything evenly. Cut the chicken into evenly sized strips, and slice the peppers and onions to a similar thickness. This helps everything cook at the same rate, so the chicken stays juicy and the vegetables turn out crisp-tender.
Don’t marinate too long. A short marinade (30 to 60 minutes) adds great flavor without affecting texture. Because the chicken strips are thin and the marinade contains lime juice, marinating longer than about 2 hours can make the chicken mushy.
Avoid overcrowding the air fryer. The chicken and vegetables can touch and overlap slightly, but don’t pile them too deeply in the basket. Overcrowding causes steaming instead of browning, so cook in batches if needed for the best char and texture.

How to Make Air Fryer Chicken Fajitas

Labeled flat lay of ingredients for air fryer chicken fajitas, including raw chicken breasts, tortillas, bell peppers, onion, spices, oil, lime juice, and Worcestershire sauce arranged on a textured surface.

How to Make Air Fryer Chicken Fajitas

Step 1: Prep Your Ingredients

Before making the marinade, take a few minutes to prep the chicken, bell peppers, and onion.

Chicken: Slice the boneless, skinless chicken breasts against the grain into strips about ⅓- to ½- inch wide. Slicing against the grain (lengthwise on a chicken breast) keeps the meat more tender.

If you’re working with large chicken breasts and the strips seem long, cut them in half so they’re easier to fit into tortillas later.

Raw chicken breasts sliced into thin strips on a wooden cutting board with a chef’s knife, ready for fajita preparation. — Chicken breasts sliced into strips, against the grain for tenderness.

Tip: If the chicken is difficult to slice cleanly, place it in the freezer for about 30 minutes to firm it up slightly before cutting.

Vegetables: I like to use a mix of red and green bell peppers for fajitas, but you can use whatever colors you like best. Remove the stems and seeds, and then slice the peppers into thin, ¼-inch wide strips.

Freshly sliced green bell peppers on a wooden cutting board with halved red peppers in the background and a paring knife nearby. — Thinly-slicing the bell peppers.

Peel a yellow onion, cut it in half lengthwise, and slice each half into ¼-inch thick strips. I like the mild flavor of yellow onion, but for a stronger flavor, you can use red. Sweet Vidalia onions are also great when they’re in season.

Sliced yellow onions and red bell peppers on a wooden cutting board with a chef’s knife, ready to be cooked for chicken fajitas. — Thinly-slicing the yellow onion.

Step 2: Marinate the Chicken

In a large bowl, whisk together a couple of tablespoons of a neutral, high-heat cooking oil (such as vegetable or avocado oil) with the following:

Fresh Lime Juice. Adds bright acidity to balance the spices and helps tenderize the chicken.
Worcestershire Sauce. Brings depth, tang, and savory umami to the marinade.
Liquid Smoke. Just a small amount gives the air-fried chicken a subtle, grilled-style smokiness. I like Colgin Mesquite {affiliate link} for fajitas, but hickory is a good choice if you prefer a milder smoke flavor.
Spices. This recipe uses a homemade fajita seasoning made with mild chili powder, smoked paprika, ground cumin, garlic and onion powders, ground coriander, Mexican oregano, salt, pepper, and a touch of brown sugar. For spicier fajitas, you can add a pinch of ground cayenne.

A stainless steel whisk in a glass bowl filled with a freshly mixed reddish-brown fajita marinade on a tan textured surface. — Whisking together the marinade.

Add the sliced chicken to the marinade and toss until every piece is evenly coated. Cover the bowl tightly and refrigerate for at least 30 minutes, or up to 1 hour for the best flavor.

You can marinate the chicken for a bit longer if needed, but I don’t recommend going beyond 2 hours. Since the strips are thin and the marinade contains lime juice, extended marinating can start to affect the chicken’s texture.

Raw chicken strips coated in a seasoned marinade in a glass mixing bowl, ready to be cooked for fajitas. — Chicken strips tossed with the fajita marinade.

Step 3: Add the Peppers and Onions

Once the chicken has marinated, add the sliced bell peppers and onions directly to the bowl. Toss everything together until the vegetables pick up some of the marinade and seasoning.

You shouldn’t see much, if any, liquid pooling at the bottom of the bowl—the marinade should be clinging to the chicken and vegetables.

Close-up of sliced raw chicken, red and green bell peppers, and onions coated in a seasoned marinade in a glass mixing bowl, ready to cook for fajitas. — Peppers and onions tossed with the chicken marinade.

Step 4: Air Fry

Preheat your air fryer to 390°F for 3 to 5 minutes, following your model’s recommended preheating time (this can vary by brand and model).

Add the chicken and vegetable mixture to the air fryer basket. It’s fine if the pieces touch and overlap slightly, but avoid piling everything too deeply. If your basket is on the smaller side, cook the fajitas in batches.

Seasoned raw chicken strips, bell peppers, and onions arranged in a single layer in an air fryer basket, ready to cook for fajitas. — Ready to air fry.

Air fry for 10 to 15 minutes, depending on your air fryer and whether you’re cooking a half or full batch. This recipe was tested in two different air fryers:

A full batch in a Ninja 6.5-quart Pro XL took about 15 minutes.
Half-batches in a Cosori 5.8-quart smart air fryer took about 10 minutes each.

Toss the mixture once or twice with tongs during cooking to encourage even browning. The fajitas are done when the chicken registers 165°F, the peppers and onions are crisp-tender, and there’s a bit of char around the edges.

Cooked chicken fajita strips, red and green bell peppers, and onions in an air fryer basket, lightly charred and ready to serve. — Air fried with charred edges.

Step 5: Finish

Transfer the chicken and vegetables to a serving platter. There will be some flavorful cooking liquid at the bottom of the air fryer basket—don’t waste it.

I like to drizzle a bit of that liquid over the fajitas to add moisture and extra flavor. For food safety, be sure the liquid reached 165°F, since it contains chicken juices.

For an optional extra step, pour the liquid into a small saucepan and simmer it for 2 to 3 minutes to both ensure it reaches temperature and reduce it slightly before spooning it over the chicken.

Bowl of air fryer chicken fajitas with sautéed peppers and onions, set on a cloth next to an air fryer and a bowl of guacamole.

Serving Air Fryer Chicken Fajitas

Serve the fajitas straight from the platter with warm flour tortillas and your favorite toppings, such as:

Sour cream, Mexican crema, or creamy cilantro-lime sauce.
Sliced avocado or chunky guacamole (shown).
Diced tomatoes or pico de gallo.
Shredded cheese, such as sharp cheddar or a Mexican blend.
Fresh cilantro.
Lime wedges for squeezing over each fajita.

On the side, we usually serve these fajitas with Spanish or Mexican rice and refried beans. For a quick weeknight shortcut, my family likes La Preferida Refried Beans and Zatarain’s Spanish Rice mix.

You can also turn this recipe into fajita bowls by layering the chicken and peppers over rice and finishing with your favorite toppings.

Plated air fryer chicken fajita tacos in flour tortillas topped with guacamole, sour cream, and cilantro, served with lime wedges and extra guacamole on a wooden board.

How to Warm Tortillas for Serving

Skillet (best flavor):
Heat a dry skillet over medium heat and warm the tortillas one at a time while the fajita filling cooks in the air fryer. Heat for 15 to 30 seconds per side, until soft, lightly puffed, and gently toasted.

Microwave (quick option):
Stack the tortillas, wrap them in a lightly damp paper towel, and microwave for 20 to 30 seconds, until warm and flexible. This method is fast, though it won’t give you the same toasted flavor as the skillet.

Once warmed, stack the tortillas and cover loosely with a clean kitchen towel to keep them warm while serving. Since we make fajitas often, we use a tortilla warmer {affiliate link} for serving (like the kind used at Mexican restaurants).