Andover Bella Italia is kicking off the first of its weekly Sunday buffets on Aug. 5 with a pizza-eating contest The buffet is between 1 and 4 p.m. Martino, the general manager, challenges anyone who thinks they can eat more slices than he can to sign up and enter before the end of July. He currently is able to eat a total of 12 slices of pizza. Celebrity look-alikes for Joe Pesci and Robert DeNiro will host this large buffet/pizza contest. They will be on hand for photos and to greet and hang out with the customers. The all-you-can-eat buffet will include traditional Italian specialties such as bowtie pasta primavera, penne alla vodka, shrimp scampi over rice, stuffed mushrooms covered in a brown brandy sauce and salads, cold cuts and more.