OOooops.
Didn't see this. Dump the chicken for now. Settle the stomach with boiled ground hamburger and plain white rice. Just cook the ground hamburger normal in a frying pan then add a 1/2 cup to a cup of water and boil it.
Chicken is a hard adjustment for some dogs.
Pumpkin can firm up the stools. But nothing until you do the rice and hamburger for a few days.
Try starting on a ground turkey (small amount) throw an egg in and a scoop of yogurt when things clear up.
Go with 2 small meals to start with.
I'm back tracking here a bit so I may have missed the age of the dog or pup.