Hi Jessica! (from another Jessica ;-)
When I went off to college I wasn't paying attention
to what I was eating (this was 10 years ago). The food in
the dorms was so gross (I'm very spoiled, mom's a trained chef)
that I actually lost the "freshman 15" during the first semester
which wasn't necessarily a good thing. I'm 5'5" and went from
118 to 102!
Pretty much the only thing I would eat in there was the salad
bar, and fortunately they had a decent one. There were sack
lunches you could pick up, and I just ate the plain sandwich
(I wasn't a vegetarian at the time and neither were the sandwiches...)
and fruit and threw out the chips and cookie. I've never been
into junk food.
Another thing I recommend is rent a mini refrigerator. This is
a very common thing to do, I think we rented ours for $50 for
the semester. That way I could keep some things in the fridge.
My room mate also had a microwave and hot pot even though we
weren't supposed to, and that was also very helpful. Those
Nile Spice cup o' soups would have come in really handy back