Place the flour, egg and mixed breadcrumbs in 3 separate bowls.
Cut the cheese sticks in half then dredge pieces in the flour, then egg, and finally the breadcrumbs; set pieces aside. When all pieces have been coated, place on a plate and freeze for 10 minutes.
Preheat air fryer to 360°F. Open the air fryer and place a piece of parchment paper in the bottom of the basket. Place the mozzarella sticks on top.
Cookfor 5 to 6 minutes, until crisp and golden. Remove from basket and set aside. Allow to cool for 5 minutes before serving.