Preheat a non-stick skillet over medium heat.

Whisk together eggs, salt, and pepper in a bowl; pour into the skillet and scramble until fluffy.

On one half of each tortilla, layer scrambled eggs, cheese, bell peppers, and bacon or sausage if using. Fold the tortilla over.

Cook folded quesadillas in the skillet for 3-4 minutes per side until golden brown and cheese is melted.

Slice into wedges and serve hot with salsa on the side.