Yes, that sounds like frostbite. The boys with their big combs and wattles are more prone to this! If I see a rooster with frostbite I know that it is past time to give them supplemental heat, and so I turn the heater in the coop on, to prevent a re-occurance and to protect the laying hens. Anything that causes harm to the hens will decrease their productivity!
Actually, my hens are not laying now because the days are short. That is OK, I try to take gentle good care with the critters that
feed me! It seems fair to me. So, the heater will be on and they may be bored but they will be warm!
Sometimes roosters are "dubbed" to remove some of the comb and wattles but I never cared to do that. It sounds as painful as frostbite and not an improvement at all!