Skinny broody girl. Should I worry? What to do?

[Mr. Frizzles Hen House]

Oh yah! Didn't mean to ignore the last post. I don't think it's a pecking order issue. I've watched close when shes eating treats and such. No one seams to be picking on her. I actually think she got anothers comb pretty good when this all started. There was blood in the nest box from another.