Place oil in a skillet. Add mushrooms, shallots, and garlic cook 2 minutes. Add the sausage breaking it up and cook until almost done. Add the pepperoni and cook until starting to crisp. Stir in the bacon. Add the pizza sauce and oregano. When warmed through remove from heat.
Mix the mozzarella and ricotta cheese together. Stir in the basil.
Serve the pizza mixture on a warmed tortilla topped with a dollup of the cheese mixture.