Preheat oven to 400°F.
Place a large, nonstick, oven-safe skillet over medium heat with 2 turns of the pan EVOO, about 2 tablespoons. Add the sausage and cook until golden brown, 7-8 minutes. Throw in the pepperoni and peppers, and cook until tender, about 5 minutes.
While the toppings are cooking, place a small saucepan over medium heat with one turn of the pan of EVOO, and sauté garlic and onion for 5 minutes. Add the tomato sauce and bring to a bubble. Season with oregano and half of the basil.