First thing unroll the pizza dough onto a cutting board or other flat surface and flatten it into a rectangle shape.
Using a sharp knife or pizza cutter cut the dough into nine equal rectangles.
Place 4 pepperoni slices in the center of a rectangle of dough.
Place about a tablespoon of shredded mozzarella in the center of the pepperoni.
Fold the dough over the pepperoni and cheese and press to seal the seam, then fold up the ends and press them into place to seal.
Place the pepperoni roll seam side down.
Repeat with remaining dough until all of the pepperoni rolls are formed.
Melt the butter in a small microwave safe bowl.
In a small bowl mix together the garlic powder, salt and Italian seasoning.
Using a pasty brush brush each pepperoni roll with melted butter and sprinkle garlic powder mixture across the top of each roll.
Place the pepperoni rolls a few inches apart in the basket of the air fryer. Cook at 350 for 8-10 minutes or until golden brown.