[Nagisa saw Akira's struggles before heading to the kitchen himself, so...when he emerges, he has two plates. Military rations and space food may be lackluster, but they aren't necessarily awful if you can figure out what to do with them...and Nagisa has at least a little experience in space.

Freeze-dried scrambled eggs, toast (proper burning of bread achieved!), and...some kind of meat in gravy from a can of rations makes for an acceptable breakfast, and he offers one meal to Akira. Of note, there's also a small package of some sort of ration on the side of the plate.]

Here.