Fry the eggs in hot oil according to your liking. Season with salt and pepper.
Slice each croissant in half and toast on lowest heat. Add 1 slice of white cheddar on each bottom croissant half.
Add the bacon, eggs, and avocado on top of the cheese. Then place the top half on top. Tip: if you want the cheese to be meltier, place it in the oven on a baking sheet for a few minutes at 300 degrees F. Be careful not to burn the croissant.