There are so many pet allergies it seems! I cook cheap chicken thighs, skin included, in water with brown rice and a little-added oil. I do three days' worth at the same time, and keep it in the fridge. If there are bones in it, I scoop them out once the chicken is cooked, so the dog doesn't get them.
For snacks I have cut up leftover meat cuts, or dried fish or meat sticks that are in the better pet stores. No cereal added ones.
These foods are kinder to the stomach, and my dog loves rice and chicken even though she has it every day. Turkey seems to upset her stomach though, which is a shame as its a bit cheaper to buy.