Preheat the oven to 400 degrees.
Roll your pizza dough out into a rectangle shape on a piece of parchment paper.
Spread marinara over the pizza dough, keeping about 1 inch on each edge.
Spread salami evenly over the top of the sauce.
Spread pepperoni evenly over the salami.
Sprinkle olives over the pepperoni and salami.
Sprinkle mozzarella cheese evenly over the top.
Roll dough carefully from the long top edge to the bottom edge.
Pinch dough to seal the edges.
Brush top of dough with egg wash.
Sprinkle garlic salt and shredded parmesan cheese over the top.
Cut 3 slits in the dough to let vent.
Bake on a cookie sheet in preheated oven for 20-25 minutes.