01 - In a mixing bowl, whisk together the eggs, milk or cream, salt, black pepper, and smoked paprika until fully combined.
02 - Heat the nonstick skillet over medium heat and add the butter. Sauté the red bell pepper and green onion for about 2 minutes until softened.
03 - Pour the egg mixture into the skillet and gently scramble, stirring frequently, until softly set, about 2 to 3 minutes. Remove from heat and set aside.
04 - Place one tortilla on a cutting board. Sprinkle half of each cheese evenly over the surface. Top with scrambled eggs, chicken, and sautéed vegetables. Sprinkle the remaining cheese over the filling.
05 - Cover with the second tortilla, pressing down gently to secure the filling.
06 - Transfer the assembled quesadilla to a clean, dry nonstick skillet or griddle over medium heat. Cook for 2 to 3 minutes per side, pressing gently with a spatula, until both sides are golden brown and crisp and the cheese has melted.
07 - Remove from heat and let rest for 1 to 2 minutes. Slice into wedges and serve immediately.