Close to campus :
Pizza villa , Fattys (bar food)

Downtown Dekalb:
Burger Flaan ( interesting mix of Indian and American burgers)
El humidor ( authentic Mexican )
Tapas place is excellent but i don’t think it’s open for lunch plus it’s $$

Along 23:
Beas wok ( have been told it’s best Vietnamese ever but that’s not my thing)
Los rancheros ( very good Mexican)

There’s plenty of other fast food as well