01 - In a mixing bowl, whisk together eggs, milk or cream, salt, black pepper, and smoked paprika until the mixture is smooth and well combined.
02 - Heat a nonstick skillet over medium heat and melt the butter. Add red bell pepper and green onion, sautéing until the vegetables are tender, approximately 2 minutes.
03 - Pour in the egg mixture and gently scramble until the eggs are softly set, about 2–3 minutes. Remove the skillet from heat and set aside.
04 - Place one flour tortilla on a clean surface. Evenly sprinkle half of the cheddar and Monterey Jack cheese over the tortilla. Distribute the scrambled eggs, cooked chicken, and sautéed vegetables over the cheese, then top with the remaining cheese.
05 - Position the second tortilla on top, pressing down lightly to seal.
06 - Heat a large skillet or griddle over medium heat. Carefully transfer the assembled quesadilla to the hot skillet. Cook for 2–3 minutes per side, pressing gently with a spatula, until both sides are golden brown, crisp, and cheese is fully melted.
07 - Remove the quesadilla from heat and let it rest for 1–2 minutes. Slice into wedges and serve immediately.