Preheat your air fryer to 370°F, about 3 to 5 minutes.

Lightly flour a clean surface and roll the pizza dough into a rough circle, about 10 to 12 inches across.

Cut the dough into 4 equal pieces, or use a round cutter to make 4 to 6 circles, depending on your size choice.

Mix olive oil, garlic powder, oregano, salt, and pepper. Brush a little oil on the edges of each dough piece.

Spoon 2 tablespoons marinara on one half of each piece, leaving a clean edge. Add a handful of mozzarella and a few pepperoni slices. Do not overfill.

Fold the dough over to cover the filling, press edges to seal, and crimp with a fork or pinch firmly to close.

Brush each calzone with beaten egg for a golden top, and sprinkle a little Parmesan if you want.

Place calzones in the air fryer basket, seam side down, leaving space so air can move.

Cook at 370°F for 8 to 12 minutes, until the crust is golden brown and the cheese is melted. You may need to cook in batches.

Let the calzones rest for 2 minutes before serving, they will be very hot inside.