Preheat oven to 375°F (190°C).
Roll out the pizza dough into a large rectangle.
Spread the cooked meat, cheeses, onions, and peppers evenly over the dough.
Sprinkle with garlic powder, onion powder, and Italian seasoning.
Roll up the dough tightly, pinching the seams to seal.
Brush with egg wash and bake for 25-30 minutes until golden brown.
Let cool slightly, then brush with melted butter before slicing and serving.