Help! Impromptu dinner party!

Through no fault of my own, a casual get together with 4-5 people has change to possibly 7-8. I need some ideas for basically a one dish main course, cold or hot. Could be a pasta salad.... I can throw together a green salad if necessary to accompany another idea. Must also be not too expensive, and the time I have to prepare this is 1.5 hours! The time is really the clencher. BTW...Rotisserie chicken has been overplayed at our house. Thanks!