My freshman year of college, I had the same problem. I made scrambled eggs pretty often (mix them up, add some salt and pepper, with just a dash of milk, and microwave for about 45 seconds).
I also learned how to make pasta in the microwave. It's time consuming, but you want to add the pasta and water to a microwave-safe bowl, and microwave it for 5 minutes, stir, another 5 minutes, stir again, then eight minutes and drain. Add your sauce or cheese (if gluten is your only issue, Velveeta makes cheese "toppers" that are less than a dollar a pack at walmart and they're safe).
Salads are almost always a safe option...just watch for gluten in your salad dressing. But I'm sure we're ALL sick of eating salads lol.
You could make chicken or tuna salads using the canned meats...but, again, watch for hidden gluten in fillers.
Also, when in a pinch, cereal and milk is filling, delicious, and safe.
I hope this helps some!