I feed my Pitbull dog Earthborn Holistic Great Plains Feast dog food which I find is best for him and he seems to love it.
If you have a Pitbull dog that needs to put on some weight like my Pitbull did before then I recommend Bully Max dog food for Pitbulls.
Some other good dog foods for Pitbulls are Wellness CORE Natural Grain Free Dry Dog Food and Taste of the Wild High Prairie Dog Food.