Someone has already mentioned it, but I'd go with hummus, baba ganouche, pita points, lots of olives and peppers. Instead of just pita points, I'd think of also providing spears or rounds of cukes, radishes, etc to dip into the hummus or baba ganouche, to keep it light. In the past, when asked for a similar appetizer, (and yes, I have been recently, to go with kabobs) I've made small bowls of the eggplant and chickpea dips, then surrounded them with the pickled veggies (olives, peppers, etc) and the fresh veggies. I know your party is probably long past, but as all of us know, it is nice to have these input for future reference.