Place frozen chicken thighs in air fryer basket with skin side facing up. (if stuck together run water over the top so they separate). Poke top with a fork 1-2 times. Set to 350 F for 20 minutes (timing will depend on size, these were on the smaller size)
Check internal temp. to insure they are 165 F in the thickest part. If you want to add bbq sauce brush this on and cook an additional 2 minutes or until browned as much as you desire.