Begin by slicing the boneless, skinless chicken breast into strips roughly the size of bell pepper strips.

Chop the bell peppers and onion into strips.

In a large bowl, toss chicken strips, bell peppers, and onion with olive oil.

Sprinkle fajita seasoning over the mixture, ensuring all ingredients are fully coated.

Place seasoned chicken and vegetables into the air fryer basket and cook at 370°F for 10-15 minutes, stirring halfway through.

While cooking, heat a dry skillet over medium heat and warm corn tortillas for 20-30 seconds on each side.

Once cooked, serve a generous portion of fajitas in a warm tortilla and add your favorite toppings.