He was probably saying, if you eat only chicken and rice, it is NOT healthy, so who cares about some Philadelphia.
Why? I know the traditional bodybuilding imagery has put chicken and rice on a pedestal but it simply lacks so much stuff. Basically chicken and rice are plain, they have pretty much nothing else than prots for the chicken, and carbs for the rice. No fibers, no vitamins, no healthy fats etc
So you would be very smart, even when bulking, to incorporate fruits, vegetables, as well as a mix of fats (steak and nuts for the less healthy; avocado, salmon, fish oils etc for the healthy)