Make flatbreads (if using Option A): Preheat oven to 200°C/400°F. Microwave 200 g shredded mozzarella + 56 g cream cheese in bursts until smooth. Stir in 120 g almond flour and 1 beaten egg. Divide into 8 balls, flatten into 8-inch circles on parchment, bake 6–8 minutes until set. Cool.
Assemble: On 4 bottom flatbreads (or 4 low-carb tortillas), spread ~1 tbsp pizza sauce. Sprinkle ~60 g shredded mozzarella and top with ~30 g turkey pepperoni. Top with second flatbread/tortilla.
Cook: Heat a skillet over medium heat with 1/2 tbsp oil. Cook assembled quesadilla 2–3 minutes per side until golden and cheese inside is melted. Repeat with remaining quesadillas.
Finish: Rest 1–2 minutes, slice into 4 wedges, sprinkle Parmesan, basil, and red pepper flakes if using. Serve hot with extra sauce for dipping.