Preheat the air-fryer to 400 F. Thinly slice the chicken into strips. In a shallow dish, whisk together egg and milk. Whisk the breadcrumbs and parmesan together in another dish.
Dip each chicken fry into the egg mixture, then coat in the breadcrumbs. Place into a large greased air-fryer basket. Air-fry for 12-12 minutes.