I'll be discussing diet change with his vet, but his vet he had his whole life just retired and we haven't found a new one I absolutely love yet. 3 out of 4 of my dogs are on Purina Pro Plan large breed chicken and rice. My 4th dog is my problem child. He's prone to hotspots and I've narrowed it down to oatmeal and chicken. So far every Purina line I've tried have caused extreme itching and hair loss. We've tried probably everything else on the shelf and for the last 7 years he's thrived on Acana. I already didn't love feeding this to him but I just noticed the ingredients changed and I'm ready to try to switch him to something better again. It's always been a nightmare of symptoms so we're both a little traumatized, but does anyone have any recommendations for a food without peas, chicken, or oatmeal ?