I suggest pastas, sandwiches, and minute rice. Also, don't forget that eggs can actually last a while unrefrigerated. As long as they are unfertilized and don't smell rotten you can totally eat them. I suggest cracking them one at a time just to make sure.
Also, pouched tuna and salmon last unrefrigerated and aren't that bad, and are low in calories. Chicken of the sea sells single serve pouches at the grocery store. It may be salty but if you toss it with vegetables you won't have to use as much seasoning. If you're creative you don't have to give up meat. That's a really really hard thing to do, especially if you really aren't inclined to do it, and especially if you're going cold turkey.
But the basics are that if you can toss it in a pan with some olive oil, you can put it over pasta or rice for a filling and healthy meal. I suggest green beans, bell peppers, mushrooms, carrots, onions, potatoes, and other hardy vegetables that hold up outside of the fridge. Take some italian seasoning mix or some soy sauce packets (ketchup, barbecue sauce... almost anything can become a marinade) along and you'll be able to improvise really easily.
Also, Clif Bars, granola, roasted nuts, etc are good for when you don't want to cook.
I hope this helps. Best of luck, and have fun!