Preheat the air fryer to 375F / 190C.
Divide the ready-rolled pizza dough into 8 equal strips, dust some flour onto the dough to keep it from sticking if needed.
Spread 1 tablespoon of tomato sauce onto each strip, then quarter all the pepperoni and evenly distributed to all the 8 strips. Divide the shredded mozzarella cheese to 8 portions and put it on top of the strips.
Roll all the strips up.
Put garlic powder, salt, and pepper in the rest of the melted butter, mix together and then brush the mixture to the top of the pizza roll-ups. (Optional: add some extra shredded cheddar cheese onto the top of the roll-ups for extra cheesiness)
Place a piece of parchment paper in the air fryer before adding the pizza rolls in seam side down.
Air fry for 10-15 minutes, until it has crisped up to your desire.
When your pizza rolls are done, let them cool to touch before serving with marinara sauce.