If it were me living in a dorm I'd be looking for the most simple and effective ways to get in the Pro/CHO/Fat. Buy stuff that doesn't need lots of prep. Use your imagination, that is basically what cooking is all about. For example, how hard is it to buy and eat raw fish? Yesterday I did just that, took two ahi tuna steaks to work with some wasabi and chowed down on them at lunch. Buy cooked chickens from Walmart etc, etc. Also, living on campus is terrible (just look at the conditions you describe), consider getting some like-minded mates and share a place.
"Lack of sleep makes cowards of us all."