Egg Allergy

We have been giving Spencer foods with eggs baked in them and he has been breaking out with bad echzema and still having bouts of upset stomach issues. After letting the allergist know that today, we have been told to start him on an egg-free diet. This is going to be SO hard! He is already an extremely picky eater and now he can't eat things that he loves like cereal bars, certain pastas, waffles, pancakes, muffins, some sausage, etc. Plus I am clueless about all the other things that I am sure are off limits. We have been instructed to do egg-free for 3-4 months, then depending how he is doing we can try to slowly introduce some eggs back in. In the meantime, no peanut butter either since we tried that recently and it could also be affecting him. Guess I need to fill that RX for an epi pen after all, cause this kid is offically a food allergy hazard.