01 - In a mixing bowl, combine cooked chicken with olive oil, smoked paprika, garlic powder, onion powder, salt, and pepper. Toss until evenly coated.
02 - In a separate bowl, whisk together Greek yogurt, light ranch dressing, and chopped fresh chives until smooth and well combined.
03 - Lay out tortillas on a clean surface. Spread a generous spoonful of ranch mixture over one half of each tortilla. Distribute seasoned chicken, red bell pepper, spinach, red onion, cheddar cheese, and mozzarella cheese evenly among the three tortillas.
04 - Fold each tortilla in half over the filling, pressing gently to seal the edges.
05 - Heat a large nonstick skillet or griddle over medium heat. Lightly coat with cooking spray. Cook each quesadilla for 2-3 minutes per side, pressing gently with a spatula, until golden brown and cheese is melted.
06 - Transfer quesadillas to a cutting board and let rest for 1-2 minutes. Slice into wedges and serve warm.