01 - Preheat the air fryer to 360°F for 5 minutes.
02 - Divide the pizza dough into four equal parts. Roll each portion into a 6-inch circle on a lightly floured surface.
03 - In a large mixing bowl, combine chicken, mozzarella, Parmesan, Alfredo sauce, spinach if using, garlic, Italian seasoning, salt, and pepper. Stir until well mixed.
04 - Place one quarter of the filling onto half of each dough circle, leaving a 1/2-inch border at the edge.
05 - Sprinkle shredded cheddar cheese over the filling for a crispier, cheesier crust, if desired.
06 - Fold each dough circle over the filling to create a half-moon. Press edges to seal and crimp with a fork for extra security.
07 - Brush beaten egg over the tops of each calzone, then drizzle or brush with olive oil.
08 - Place calzones in the air fryer basket in a single layer. Cook in batches if needed to avoid overcrowding.
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.