Cut each string cheese in half to make 24 shorter sticks. Place them in the freezer for 15 minutes while you set up your breading station.

In three shallow dishes, place flour in the first, beaten eggs in the second, and mix both breadcrumbs with garlic powder, Italian seasoning, and salt in the third.

Take each frozen cheese stick and coat in flour, then egg, then breadcrumb mixture. For extra crispy results, dip back in egg and breadcrumbs again.

Preheat air fryer to 390°F. Spray basket with cooking spray. Place mozzarella sticks in a single layer, not touching. Spray tops lightly with cooking spray.

Air fry for 6-8 minutes until golden brown and crispy. Serve immediately with warm marinara sauce.