01 - Set air fryer to 360°F and allow to preheat for 5 minutes.
02 - Divide pizza dough into 4 equal portions. Roll each into a 6-inch circle on a lightly floured surface.
03 - Thoroughly mix chicken, mozzarella, Parmesan, Alfredo sauce, baby spinach (if using), minced garlic, Italian seasoning, and season with salt and pepper in a mixing bowl.
04 - Distribute a quarter of the filling onto one half of each dough circle, leaving a 1/2-inch margin at the edge. For a cheesier crust, sprinkle cheddar over the filling if desired.
05 - Fold the dough over the filling to form a half-moon. Pinch and seal edges well, using a fork to crimp securely.
06 - Brush calzone tops lightly with beaten egg, then drizzle or brush with olive oil for extra crispiness.
07 - Arrange calzones in a single layer in the air fryer basket, cooking in batches as necessary. Air fry at 360°F for 12–15 minutes until golden brown and crisp.
08 - Allow calzones to cool for 2–3 minutes before serving.