This breed don't eat more than they need. It's okay. They know how much to eat. As long as he is healthy don't force to eat what he does not want. Chicken is good protein. Please give what he likes. I never give my dog eggs. She is 14 years old now and healthy. She mostly eats rice and chicken. They look big because the long fur. But have small stomach. Eggs can make some dogs sick in the stomach.