The way to do it, if they still allow it, is to do a lunch buffet to go. At first you don't think you can stuff that much food into a Styrofoam tray, but everyone I've suggested this to has gotten two very nice meals out of a single to go trip.
Peking in Columbus is a good suggestion too.
And Sun Hong Kong (is it still there?) was another place I liked when I was a student, albeit not a buffet. I went to high school with the daughter of the owner of that place.