Put a pizza stone or inverted baking sheet on the lowest oven rack and preheat to 475 degrees F for at least 15 minutes. Meanwhile, roll out the dough into a 9-inch round on a lightly floured surface. Lightly dust a pizza peel or another inverted baking sheet with flour; lay the round of dough on top and set aside. Cook the bacon in a large skillet over medium heat, stirring, until crisp, about 6 minutes. Remove with a slotted spoon and drain on paper towels. Combine the tomato sauce, olive oil, garlic and oregano in a medium bowl; season with salt and pepper. Slide the dough directly onto the hot stone or baking sheet and bake until lightly golden and puffy, about 7 minutes. Remove from the oven and let cool slightly, then carefully slice the crust in half horizontally with a serrated knife to make 2 thin crusts. Turn the crusts cut-side up. Spread with the sauce mixture, then top evenly with the mozzarella, cheddar and bacon. Slide the pizzas back onto the hot stone or baking sheet; bake until the cheese melts and the crust is golden, about 8 more minutes. Sprinkle with the parmesan.