I can't think of anything quick as well as rich in protein unless you get those proteins from a supplement. In that case you could put milk, protein and oat for example into a mixer and that would be really quick. You could also eat turky, ham or tuna, but that's not the best for breakfast because of the fact that it takes very long to digest. You could boil eggs and that's fairly quick but you should do it every morining because it's not a good idea to store them.