Preheat your oven to 375°F (190°C) and line a baking sheet with parchment paper.
Roll out your pizza dough into a large rectangle, about 12x18 inches.
Spread marinara sauce evenly over the rolled-out dough, leaving a 1-inch border.
Sprinkle mozzarella and cheddar cheese, pepperoni, sausage, bell peppers, onions, and olives over the sauce.
Roll the dough into a tight log, sealing the edges well.
Place the rolled dough seam-side down, brush with olive oil, and sprinkle with Italian seasoning.
Bake in the preheated oven for 25-30 minutes until golden brown.
Let it rest for 5 minutes, then slice and serve warm with extra marinara sauce.
