I am buying fried chicken already made and making pulled pork for 100 people (80 adults and 20 children). How many pieces of chicken should I buy? [duplicate]

Based on the answer to the question Johanna linked, you should aim for about 8 oz or 225g of meat per person. Without knowing how much pulled pork you intend to be serving, and which part of the chicken you're looking at, here is a breakdown of how much each piece of a broken down chicken weighs, so you can use that to figure out how much you want to serve. Source