Preheat oven to 400 degrees. In a large skillet over medium heat cook sausage, onions and garlic until sausage is done. Stir in Italian seasoning. Drain off fat and set meat mixture aside.

Shape one dough portion to a 12-inch circle. Press dough into the bottom and up the sides of a 10-inch skillet.

Sprinkle half of the cheese over the bottom crust. Top with the meat mixture. Spread the 1/2 cup marinara sauce over the meat and sprinkle the peppers over the sauce. Top with the remaining cheese.

Roll the remaining dough portion into another 12-inch circle. Place the dough over the filling. Pinch and roll the edges of bottom crust and top crust together to seal. Brush the top crust with olive oil, then sprinkle with Parmesan cheese and garlic salt. Using the tip of a sharp knife, cut 3-4 slits in the top crust.

Bake for about 25 minutes or until crust is golden brown and filling is bubbly. Let stand for 5-10 minutes before serving. Serve with warm marinara sauce for dipping.