Depends how fancy you want to go. http://www.booneslli.com/ That is close to the site.
If you go a bit further you start hitting Cracker Barrel, LaS, Olive Garden, Red Lobster etc. All on 31 nearish S Airport. Jenetes has AMAZING Mexican. BWWs, mall food court, Chilis, Pizza Hut, Bagger Daves.
Is there something specific you want? or dont want?
We went to 7 Monks before the last event and they had really good food. There are a bunch of non-chain restaurants downtown to choose from and the downtown area is only about 20 minutes from the camp.