Cook the sausage in the cast iron skillet over medium heat until it is browned. It will take about 10 minutes. Crumble the sausage with a spatula while it cooks.
Stir the pepperoni, marinara sauce, dried oregano, dried basil, and garlic powder into the sausage.
Let it cool, and then stir in the mozzarella cheese.
To wrap your rolls, put about one tablespoon of filling in the center of a wrapper. Fold the right side of the wrapper over the filling, then fold the left side. Fold the top of the wrapper over the filling, tucking any filling that is spilling over inside the dough.
Finally, fold the bottom of the wrapper over the filling, completely sealing the filling inside. Tuck the sides in a bit more if needed. Fold and fill all of the pizza roll wrappers.
Pack the filling into the rolls as much as possible without overfilling. Cheese will ooze out while air frying if there are holes in the wrappers. I was able to use all of the filling. (Refer to the recipe video for visuals of this process.)
If you have two air fryer trays, mist them both with cooking oil spray. Put the pizza rolls in a (non-touching) single layer on the trays.
Whisk an egg and brush it all over the tops of the pizza rolls with a pastry brush.
Air fry the rolls for 5 minutes at 360°F (182°C). Then switch the position of the trays in the air fryer oven and cook the rolls for 5 minutes more.
Next, flip all of the pizza rolls over and spray them with cooking oil spray. Switch the position of the trays in the air fryer and cook for another 5 minutes at 360°F (182°C).
Switch the position of the trays in the air fryer oven one last time. Air fry the pizza rolls for 5 final minutes at 360°F (182°C). (That's a total cooking time of 20 minutes.)
Sprinkle Parmesan cheese over the warm rolls and garnish with fresh chopped basil. Let them cool a bit before you enjoy them dipped in warm marinara sauce.