Preheat oven to 375℉. Roll out your pizza dough on a heavily floured surface until it is about ¼ inch thick in the shape of a pizza. Layer your slices of cheese across the pizza so that they cover as much of the dough as possible. Then sprinkle the parmesan across the dough. Add a layer of pepperoni and salami so that the meat isn't overlapping.
Pull the edges of the dough so there is some space between the cheese/meat and the edge of the dough. Roll the dough into a log or loaf of bread with the seam placed at the bottom so that it doesn't unroll.
Cut the bread into 8 even rolls and place them in an oiled round baking pan so that they're touching in the middle. There should be some space around the edge. Brush the edges and top of the bread with the egg mixture. Season the edges with salt, pepper, and garlic powder.
Bake in the oven for 30 minutes or until the edges are golden brown. Remove from the oven and serve hot with tomato sauce!
Notes
When rolling the dough out, avoid letting it become too thin. The thinner the dough is, the more likely it is to fall apart and break during the cooking process while the bread is expanding.
Rolls can be stored in the refrigerator and the freezer and then reheated by baking in the oven at 350℉.