01 - Preheat the air fryer to 360°F for 5 minutes.
02 - Divide the pizza dough into 4 equal portions and roll each into a 6-inch circle on a lightly floured surface.
03 - Combine cooked chicken, mozzarella, Parmesan, Alfredo sauce, spinach if using, garlic, Italian seasoning, salt, and pepper in a mixing bowl, and mix thoroughly.
04 - Spoon one quarter of the filling onto half of each dough circle, leaving a 1/2-inch border around the edge.
05 - Sprinkle cheddar cheese over the filling if extra cheese and crispiness are desired.
06 - Fold the dough over the filling to create a half-moon shape and pinch the edges firmly to seal. Use a fork to crimp for added security.
07 - Brush the tops of the calzones with beaten egg, followed by a light drizzle or brushing of olive oil.
08 - Arrange calzones in the air fryer basket in a single layer. Cook in batches if necessary.
09 - Air fry at 360°F for 12 to 15 minutes until the calzones are golden brown and crispy.
10 - Let calzones cool for 2 to 3 minutes before serving.