Use egg whites. If you wanted to only use egg whites instead of full eggs, you can do that as well! Switch the protein. Cooked sausage or ham could replace the bacon, or you could leave them out ...

Whisk in the eggs, milk and melted butter until well combined. Stir in the cooked bacon. Pour a ladleful of the batter into each well of the waffle maker, close the lid and cook for five minutes ...