No, in any rule book, it's not ok, it is meant to upset their gut pH and constitution. It is illegal to feed them meat.
However, some old timers have told me they feed it to show birds to get them in tip top condition. And I have watched hens kill frogs and eat them as well as scaring my cat off mice, dead birds, etc, so they can eat them. Do I think it will hurt your chickens; no, but it is illegal, and perhaps you have something more suitable like some rice you could cook (of course it would have to be rice kept out of your kitchen, and cooked in a pan which isn't used for human food).