Heat the air fryer to 390°F / 200°C. Slice the chicken breasts in half horizontally to create two thin halves from each breast. Brush each side lightly with olive oil.

Stir the breading ingredients together. Dredge the chicken breast halves in the breading multiple times until they are thoroughly coated.

Shake off any excess breading and place the chicken in a single layer in the air fryer. You should be able to fit about two chicken breast halves at a time. Cook for 4 minutes.

Flip the chicken and then cook for an additional two minutes. The exact cooking time will depend on the thickness of your chicken, so you can either check with a digital thermometer to ensure it has reached 165°F or cut one piece in half to check for doneness.