I've heard mixed reviews about food causing acne, especially greasy or fatty foods.
I've been told by dermatologist and read many studies that say food has NO connection to acne, but have also heard personal accounts from people that think some foods make them break out more than usual.
I think the chances of the PB causing anymore acne is very low, but maybe in certain cases possible. Acne mainly comes from stress, poor skincare, genetics, etc...