I just looked quickly at a few I was thinking of that might work for you. Please double check the ingredients to make sure it doesn’t contain any of your triggers.
Another to take a look at would be Dr. E’s Limited Ingredient Grain and Potato Free dry dog foods in buffalo. Also take a look at Great Life Grain Free buffalo.
Canine Caviar Limited Ingredient Diet Open Meadow Holistic Entrée Dry Dog Food would be a good choice if he can tolerate millet.
Personally, I’ve used First Mate products for my boy with sensitivities and think highly of them. At quick glance, their Ocean Fish Meal Original Formula Limited Ingredient Diet Grain-Free might work.
