Energy bar? Probably not as healthy as you think. Read the ingredience and see how much of it is processed, how much are things that you could not point to in a farm or field. If its made of oats, nuts, raisins, you’re probably ok. If its got things you cannot spell, think twice.
Best bet for breakfast? My vote is cereal and milk (the blue cap), with a bananna (and oatmeal, with a bananna in the winter)
Leave the eggs are for Shabbos, (or a Sunday omlet)