My girls have bare chests and bellies

[Newchicksfam]

My guess is they are stressed due to not getting outside to roam during the day. Looks like feather picking although there are some pin feathers coming in. Have you seen any lice or mites on their bodies? I don’t treat unless I see them. Permethrin is good if they have them. I would try to figure out which one is laying the soft egg, and treat her with calcium 300 mg daily for 7 days.

They get outside to roam everyday. Most days is almost all day. I only have them in the run if I run to town or do errands and when I am gone a few mornings a week. I haven't seen any lice or mites but I have noticed them scratching a bit so that is why I was checking them out when I found her belly that way.

 

[Eggcessive]

Chicken feed has 100% of just what they need in a balanced feed. A treat should be small and occasional just to get them to come in or come to you. It sounds like there are so many treats, they may have an imbalance or nit ne getting enough protein. They do need poultry grit and crushed oyster shell for calcium, and they will take that when they need it free choice.

 

[Newchicksfam]

Can you post some pictures of the coop/run, so we can see your set up? Include roosts and dimensions. Do they roost, or do they sleep on the ground or in nest boxes? I'm wondering if they are over crowded and/or bored, which is a very common reason for feather picking. Exposed skin often looks red, just from being exposed.
It would be best to try to only treat the one laying soft shelled eggs with calcium.

I will try to get some picks today. We have a lot going on today but will try. They change on sleeping. Sometimes I see one or 2 roost and one sleep in the nest box. It could be that they are bored when they are in there coop/run. I have thought that for a bit and have been trying to get some things to address that. I have put pecking blocks and things in but not much interest in that. I've put toys in and they just sit.

 

[Newchicksfam]

Can I put anything on it to help her?