Bone-in, skin-on chicken thighs: air fry at 375°F. for 8 minutes, then pause the air fryer and remove the basket. Use tongs to flip the pieces over. Add a tablespoon or so of finely grated Parmesan cheese to the top of each thigh, then return the basket to the air fryer, reduce the temperature to 350°F. and cook for 4 minutes. Boneless, skinless chicken breasts or thighs, air fry at 375°F. for 6 minutes, then pause the air fryer and remove the basket. Use tongs to flip the pieces over. Add a tablespoon or so of finely grated Parmesan cheese to the top of each breast, then return the basket to the air fryer, reduce the temperature to 350°F. and cook for 4 minutes. NOTE: There are many different air fryers on the market and they often vary widely according to cooking times. It's best to use an instant-read meat thermometer to check that the internal temperature of the chicken has reached 165°F.