Slice mozzarella cheese into 1/2 inch thick sticks.
Dip the cheese sticks into flour and place them on a baking sheet; set aside flour for later. Freeze for 1 hour.
Combine panko crumbs, chopped parsley, salt, and garlic powder in a shallow dish.
Whisk eggs and water together in a separate shallow dish.
Coat the frozen cheese sticks in flour again, then the egg, followed by the panko crumbs.
Coat air fryer basket with cooking spray. Lay mozzarella sticks on the basket.
Air fry at 400° for 4 minutes or until golden brown. Serve immediately and enjoy!