Yes chicken giblets are edible although some people don't eat the chicken giblets and throw them out instead.
But you can either eat the chicken giblets or use the chicken giblets in soups, stews, gravies or even stuffing poultry with.
I love eating chicken giblets and sometimes will eat the chicken giblets by themselves or add them to flavor soups and gravy with.
Cooking turkey with soups and gravy makes for good soup and gravy.
You should first remove the chicken giblets before cooking the chicken however it's not gonna do any harm to cook the chicken with the chicken giblets inside.