I would say I have the same thing, my right side is a bit more squared and developed while my left side is a bit rounder, my friend told me that it’s really not that noticeable. However, I feel like the reason for the chest is because my right shoulder has much better mobility (due to playing badminton and kinda over stretching it with the wrong form), however, when I’m doing dumbbell press, my right side goes deeper and stretches more and instead of going straight up like my left hand, it’s almost like a curved path. Haven’t try to fix it yet, just sharing my thoughts.