Following these steps will lead you to create the most delicious Pizza Quesadilla with Mozzarella and Pepperoni:

1. Heat the Pan: Place a large skillet over medium heat and add the olive oil, allowing it to warm.
2. Prepare the Tortilla: Lay one tortilla flat in the skillet.
3. Layer Cheese and Pepperoni: Sprinkle half of the mozzarella cheese evenly over the tortilla. Add half of the pepperoni slices on top.
4. Add Seasoning (Optional): If desired, sprinkle the Italian seasoning and garlic powder over the toppings.
5. Top with Another Tortilla: Place a second tortilla on top, pressing gently to ensure everything adheres.
6. Cook Until Golden: Cook for about 3-4 minutes or until the bottom tortilla is golden brown. Carefully flip the quesadilla using a spatula.
7. Finish Cooking: Cook the other side for another 3-4 minutes until it’s crispy and the cheese has melted thoroughly.
8. Remove and Slice: Once cooked, remove the quesadilla from the skillet and let it cool slightly. Cut into wedges with a sharp knife.
9. Repeat: Repeat steps 2-8 with the remaining tortillas, cheese, and pepperoni. You can make multiple quesadillas, depending on your needs.
10. Serve with Marinara: Serve warm with marinara sauce on the side for dipping.

This simple method will guide you in creating a pizza quesadilla masterpiece that is full of flavor and satisfaction!