What are some of the best (but not expensive) places to grab some dinner before a home game?

Hello everybody, I'm bringing my extended family who are Cubs fans into town to watch the game tomorrow. A few of them are wanting to grab food outside the stadium before the game, and I am wanting to know what are some good spots for dinner nearby the stadium that are relatively inexpensive? I'm not too familiar with downtown myself and typically just eat in the stadium. Any advice or suggestions are greatly appreciated!