not in terms of nutrition
exactly my point bro. You've changed your protien, what else has changed. I break out when I change soaps, laundry detergent, and a multitude of other shit that has nothing to do with nutrition.
depending on your age/training level, increased acne can be a good thing as it is usually associated with a raise in hormone levels. I doubt your protien is having that effect though.
There are just too many variables to make a determination, if its that bothersome, go check with a dermatologist. (just dont let him put you on accutane)