Hello my hen recently have been losing feathers and I'm not sure if she is molting and I see her fixing her feathers every minute & she is kept indoors and was never free range. She lay eggs normally and is eating fine. I gave her layer feed crumble everyday. I even also give her treats like cheese and bread, which she loves. Do i need to cover something over her chest? What do i need to improve so she can grow her new feathers?