Gaming and food go so naturally together that we often take it for granted. I think the variation of the way this is expressed is mainly related to how much people want to prepare and/or spend ahead of time. I remember countless gaming sessions where I'd simply buy bags of chips and several 2 liter bottles of caffeinated soda. If I was feeling adventurous a frozen pizza might be on the menu.
Fortunately for some game groups (like James Raggi's) gamers do sometimes get some great food at the gaming table. So in the interest of throwing out one idea that's a little different, try making Indian food ahead of time. I direct you to my wife's blog.
She is from India, so most of these recipes are "authentic," but most are adapted to ingredients commonly found in the US. You will also find a few other things there, some influenced by me and some not, that are Americanized. All of these recipes are vegetarian.