Split the gluten-free English muffin and toast until golden brown.
In a small non-stick skillet, melt the butter over medium heat.
Crack the egg into the skillet, season with salt and pepper, and cook until the whites are set but the yolk is still soft.
Place the cheese slice on top of the egg during the last 30 seconds of cooking to allow melting.
Place the cooked bacon on the bottom half of the toasted muffin.
Transfer the cheesy egg onto the bacon layer.
Top with the remaining muffin half and serve immediately.