Cut mozzarella cheese into 3-inch sticks if not pre-cut.
Set up a breading station with three shallow bowls: one with flour, one with eggs beaten together with water, and one with Italian seasoned breadcrumbs mixed with garlic powder, dried oregano, salt, and black pepper.
Dip each mozzarella stick first into the flour, coating all sides evenly, then shake off excess.
Next, dip the floured mozzarella stick into the egg wash, ensuring it is fully coated.
Then roll the stick thoroughly in the breadcrumb mixture, pressing gently to adhere the coating.
For extra crispiness, repeat the egg wash and breadcrumb coating once more on each stick.
Place the breaded mozzarella sticks on a plate or tray and refrigerate for 10 minutes to help the coating set (no freezing required).
Preheat the air fryer to 390°F (200°C) for 3 minutes.
Lightly spray the air fryer basket with cooking spray.
Arrange the mozzarella sticks in a single layer in the basket, making sure they do not touch.
Lightly spray the tops of the mozzarella sticks with cooking spray.
Air fry at 390°F (200°C) for 7 to 8 minutes, turning halfway through, until golden brown and crispy.
Carefully remove from the air fryer and serve immediately with marinara sauce or your favorite dipping sauce.