If you're a fan of barbecue flavors, this recipe is for you. Using a food processor, blend together a mixture of barbecue sauce, garlic, onion powder, and a touch of brown sugar. Coat the chicken legs with the barbecue sauce mixture and let them marinate for a while. Then, place the chicken legs in the air fryer and cook until they are caramelized and cooked through. The result is a finger-licking good chicken dish that pairs well with coleslaw and corn on the cob.