Preheat the oven to 375˚F. Line a muffin pans with paper liners and spray the inside with cooking spray.
In a large bowl, mix together the eggs, seasoning salt and 1 cup of cheese.
Layer the bottom of the prepared muffin pan with some bell peppers. Pour the egg mixture into the muffin cups. Sprinkle the tops with the remaining cheese.
Bake for 25-30 minutes, or until muffins have risen and are slightly browned.