01 - Preheat oven to 425°F. Line a large rimmed baking sheet with parchment paper or foil.
02 - Combine shrimp, bell peppers, onion, garlic, jalapeño, olive oil, chili powder, cumin, smoked paprika, coriander, salt, pepper, cayenne, and lime juice in a large bowl. Toss until evenly coated.
03 - Spread shrimp and vegetables evenly on the prepared baking sheet. Roast for 10–12 minutes until shrimp are pink and vegetables are tender.
04 - Remove shrimp mixture from oven. Increase oven temperature to 450°F.
05 - Lay out 3 tortillas. Distribute half the cheese evenly on top. Spoon shrimp mixture over cheese, then sprinkle with remaining cheese and cilantro. Top each with another tortilla to form quesadillas.
06 - Carefully transfer assembled quesadillas to the baking sheet. Lightly brush tops with a little olive oil.
07 - Bake for 6–8 minutes, then flip and bake another 4–5 minutes until golden and crisp.
08 - Remove from oven and let rest 2 minutes. Cut into wedges and serve with sour cream, salsa, lime wedges, and avocado.