Prep: preheat a large skillet over medium heat.
Sauce: Place two tortillas on a large cutting board. Spread a thin layer of pizza sauce on one tortilla.
Assemble: On top of the sauce, sprinkle a thin layer of cheese. Add a layer of any toppings you prefer. Sprinkle on another thin layer of cheese and a pinch of parmesan. Top with the other tortilla.
Cook: Add a little cooking spray or butter to the warmed skillet, if you prefer. Gently place the quesadilla on the warmed skillet and cook for 3-5 minutes on one side or until golden brown. Flip and cook for an additional 2-3 minutes. Transfer the cooked quesadilla to a cutting board and repeat with the other pizza quesasilla.
Eat: let cool slightly (those toppings will be hot) and slice into wedges, strips or chunks before serving.