Preheat oven to 400°F. Heat a large 10-12 inch non-stick pan over medium heat for about 2 minutes until evenly warmed.

Place one tortilla flat in the pan and immediately sprinkle half a cup of mozzarella evenly across the surface, leaving a small half-inch border around the edges.

Place the second tortilla on top to create a quesadilla and press down gently with your spatula to seal. Cook for 2-3 minutes until the bottom turns golden brown with visible toasted spots.

Carefully flip the pizzadilla using a wide spatula. Cook the second side for another 2-3 minutes until golden brown and the cheese inside has completely melted.

Transfer the quesadilla base to a baking sheet. Spread pizza sauce evenly over the top tortilla, leaving a small border. Sprinkle the remaining half cup of mozzarella cheese, then arrange pepperoni slices and add black olives if using.

Bake for 5-7 minutes until the cheese bubbles and turns lightly golden around the edges. Watch closely after 5 minutes.

Let rest for 1 minute, then slice into 4-6 wedges using a pizza cutter. Serve immediately.