Gather all ingredients before starting. Shred the cheese if not ready. Slice pepperoni if needed. Keep pizza sauce nearby. This makes cooking faster and easier without any delay.

Place a non-stick pan on medium heat. Add a little oil or butter. Let it melt and spread evenly. This step helps the tortillas cook evenly and become crispy.

Put one tortilla in the hot pan. Let it warm for a few seconds. This makes it soft and ready for filling. Do not let it burn or become too dry.

Spread a thin layer of pizza sauce over the tortilla. Do not add too much sauce. Too much sauce can make the quesadilla soggy and messy.

Sprinkle shredded mozzarella cheese over the sauce. Add pepperoni slices evenly on top. Sprinkle Italian seasoning and chili flakes for extra flavor and a slight spicy taste.

Place another tortilla on top to form a sandwich. Press gently with a spatula. This helps everything stick together and cook evenly from both sides.

Cook for 2 to 3 minutes on one side. Flip carefully using a spatula. Cook the other side until golden brown and crispy. Cheese should melt completely inside.

Remove from pan and place on a cutting board. Let it cool for a minute. Cut into triangles and serve warm with extra pizza sauce for dipping.