01 - In a small bowl, thoroughly whisk eggs with milk or cream, salt, black pepper, and smoked paprika until cohesive.
02 - Warm a nonstick skillet over medium heat and melt butter. Add red bell pepper and green onion, stirring until vegetables soften, about 2 minutes.
03 - Pour the egg mixture into the skillet with vegetables. Gently scramble, stirring constantly, until eggs are soft-set, about 2–3 minutes. Remove skillet from heat.
04 - Arrange one tortilla on a clean surface. Sprinkle half of each cheese evenly, followed by the scrambled egg mixture, chicken, and sautéed vegetables. Top with the remaining cheese.
05 - Place the second tortilla on top to form the quesadilla.
06 - Preheat a large skillet or griddle over medium heat. Carefully transfer assembled quesadilla to the skillet. Cook 2–3 minutes per side, pressing lightly with a spatula, until each side is golden brown and cheese is thoroughly melted.
07 - Remove the quesadilla from heat and allow it to rest for 1 to 2 minutes. Slice into wedges and serve immediately.