Yes, it can. Particularly if she is in the really, really bald or pincushion stage of molt. This is <I>another</I> reason to raise their daily protein level.can molting make a hen so uncomfortable that her appetite lessens?
When there are molting birds in my flock - and there ARE right now! - I give them a larger than normal amount of BOSS (Black Oil Sunflower Seed) for their daily hand-feeding treat. Every now and again, I will add dry cat food into their feed trough.