01 - Preheat air fryer to 360°F for 5 minutes.
02 - Divide pizza dough into 4 equal pieces. Roll each piece into a 6-inch circle on a lightly floured surface.
03 - In a mixing bowl, combine chicken, mozzarella, Parmesan, Alfredo sauce, spinach (if using), garlic, Italian seasoning, salt, and pepper. Mix thoroughly.
04 - Spoon a quarter of the filling mixture onto half of each dough circle, leaving a 1/2-inch border.
05 - If desired, sprinkle shredded cheddar cheese over the filling for extra crispiness.
06 - Fold dough over filling to form a half-moon. Pinch edges tightly, then crimp with a fork for a secure seal.
07 - Brush tops of calzones with beaten egg, then lightly brush or drizzle with olive oil.
08 - Arrange calzones in a single layer in the air fryer basket. Cook in batches if necessary.
09 - Air fry at 360°F for 12 to 15 minutes until golden brown and crisp.
10 - Allow calzones to cool for 2 to 3 minutes before serving.