Pale comb and waddle

Pale comb and wattles can indicate illness, or a physical ailment, but ic can also mean they are just out of production for some reason. How old is she? Older hens can get that way. Or, she might be broody, that can cause it, too. Is she spending a lot of time on the nest or are there periods of time where you can't find her? Also, they can get pale and have poor production when they are moulting, and a lot of ours are moulting right now. Putting some vitamins, like Aviacharge, in the drinking water, will be good for her and the whole flock; if I were you I'd just keep an eye on her for a few days, as long as she is eating and acting normally, anyway.