When I was a hungry student on the go, also on a limited budget, Souper Salad was my spot for a quick bite. It isn't the greatest quality, being a salad bar and semi-buffet, but it's cheap and fast...and they have Dr. Pepper. Oh yeah, baby...the close proximity to campus was also a plus. Be sure to bring cash though for a tip, they don't give cash back or have an atm machine.