Preheat the air fryer to 400°F (200°C).
In a large bowl, combine olive oil, garlic powder, smoked paprika, onion powder, salt, and black pepper.
Cut the chicken breasts into even pieces for uniform cooking.
Toss the chicken pieces in the spice mixture until coated.
Place the chicken in the air fryer basket in a single layer.
Air fry the chicken for 10-12 minutes, flipping halfway through.
Check the internal temperature to ensure it's 165°F (75°C).
Let the chicken rest for 5 minutes before serving.