No matter what size air fryer you have, you can cook a whole chicken in it. The key is to make sure that the chicken fits inside the air fryer. If it doesn't fit, you can cut it into pieces to make it fit. Cooking a whole chicken in an air fryer is a great way to save time and money. You can buy a whole chicken for cheaper than you can buy individual chicken breasts or thighs. And, cooking it in an air fryer is a lot faster than cooking it in the oven.