I like the campus food court near the library. I always go to the Thai/Indonesian/Southeast Asian store and order a rice meal with two side dishes. Total cost is $7.80 and it fills me up quite well, which is saying a lot, because for a girl, I eat like a pig. >w>;
The store right across that one, selling pitas and stuff, has a pita + chips or salad combo that also fills me up quite well. If you get the beef or spinach pita + chips or salad, it's $7.50. If you get the chicken pita + chips or salad, it's $8.00. Not a bad deal, I'd say, especially since it also fills me up quite well.
Edit: Oh, and the Southeast Asian store has several vegetable dishes. A good thing if you want to make sure that you're eating a healthy portion of vegetables each meal. I always order one meat side dish (usually red meat, because my iron levels are low) and one vegetable side dish, plus fried rice, just because I love fried rice.