Start by slicing the chicken, bell peppers, and onion. Uniform pieces ensure even cooking and tender bites.

In a mixing bowl, combine the sliced chicken with olive oil, chili powder, cumin, garlic powder, onion powder, salt, and pepper.

Mix in the bell peppers and onion with the seasoned chicken.

Preheat your air fryer to 400°F (200°C) for about 5 minutes.

Place the chicken and vegetable mixture in the air fryer basket in a single layer.

Cook for 10 to 12 minutes, shaking the basket halfway through for even cooking.

Ensure the chicken reaches an internal temperature of 165°F (75°C).

While the chicken is cooking, warm your tortillas in a pan or microwave.

Once cooked, serve the fajitas with warm tortillas and your choice of toppings.