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, mix chicken, mozzarella, Parmesan, Alfredo sauce, spinach (if using), garlic, Italian seasoning, salt, and pepper until evenly combined.
04 - Spoon one-fourth of the filling onto half of each dough circle, leaving a 1/2-inch margin at the edge.
05 - If desired, sprinkle shredded cheddar cheese over the filling for added crispiness.
06 - Fold each dough circle over the filling to create a half-moon. Pinch edges firmly to seal and use a fork to crimp for a secure closure.
07 - Brush the tops of calzones lightly with beaten egg and brush or drizzle with olive oil for extra crispiness.
08 - Place calzones in the air fryer basket in a single layer. Work in batches if needed to avoid overcrowding.
09 - Air fry at 360°F for 12 to 15 minutes until the calzones are golden brown and crisp.
10 - Allow calzones to cool for 2 to 3 minutes before plating and serving.