01 - Combine shredded chicken with cumin, smoked paprika, garlic powder, salt, and black pepper in a medium bowl. Toss until evenly coated.
02 - Heat 1 tablespoon oil in a large skillet over medium heat. Add onion, bell pepper, and jalapeño. Sauté for 3–4 minutes until softened. Add seasoned chicken and stir to combine. Cook for 2 minutes, then transfer mixture to a bowl and wipe skillet clean.
03 - Place tortillas flat. On one half of each tortilla, layer a quarter of the cheese, followed by a quarter of the chicken mixture, then another layer of cheese. Fold tortillas in half to create half-moon shapes.
04 - Heat remaining oil in skillet over medium heat. Cook 1–2 quesadillas at a time for 2–3 minutes per side, pressing gently with spatula. Cook until tortillas are golden and crispy with melted cheese.
05 - Transfer quesadillas to cutting board and rest for 1 minute. Cut into wedges and serve immediately with sour cream, salsa, cilantro, and lime wedges.