Coat the chicken with the oil, then season with salt and pepper. Toss with corn starch.
Spray the air fryer basket with oil or use a brush/paper towel to apply a thin coat of oil onto it. Arrange the chicken in a single layer and air fry the chicken at 400ºF for 15 minutes. When the 15 minutes is up, flip the chicken and air fry another 5 minutes.
Remove chicken immediately. Sauce or dust as needed.