What are you feeding her, including treats?
Does she have a source of grit (crushed granite)?
Make water available for her to drink, but remove her food for most of the day. See if the crop empties some. Get some more photos of her poop too.
Re-Check her crop again in the morning before she eats/drinks, it should be flat/empty. If it's not, then let us know. Read the article below - it will help you with treating the crop.
https://www.backyardchickens.com/ar...w-to-know-which-one-youre-dealing-with.73607/