I too am a great fan of hard boiled eggs (preferrably 2 per day) plus a bagel with cream cheese and a beef stick (the long ones). That's a high protein jump-start to my day. Add a liter of Tang and I've got a down home breakfast.
I leave the eggs in the shell as they last longer that way (still sterile inside). I store the eggs in my cook pot, wrapped in a bandana for cushioning. Yes, I have to deal with the shells but the weight penalty is tiny and my trash bag is huge.
Unfortunately, three days' worth is usually all I can carry. Six eggs and three Bagels don't compress worth a darn and the bagels will stale quickly. Meat sticks are a non-issue; they'll fit anywhere.
The big advantage to me is there's no need to fire the stove in the morning; it's up, pack, and out for me. Make the miles before the afternoon thunderstorms hit.
I find it hard enough to gag down food the first four trail days anyway, so I carry something I know I'll (eventually) eat.
To me, instant oatmeal has less flavor and nutrition that the envelope it is packed in. YUCK! It does make great wallpaper paste though; gotta give it that.
If I really want a hot breakfast or when I find myself with more trail breakfasts than I have eggs and bagels, Cream of Wheat with either raisins or cranberries is actual an edible substitute. On really cold mornings, I must admit I'll grab one of these over the eggs….or in addition to them.