Yeah, I wonder if it's a protein deficiency of the lack of what scratch has in it... I think they don't have enough in their diet to produce the egg and the shell, so I'm hoping this will help... will let them out later today to free range as well to get some bugs etc. I don't let them out all day because they get stuck in places and get confused easily and then I have to chase them around!
Free ranging is a near perfect way of correcting dietary issues. They know what they need and they find it. The only reason it is "near perfect" is because of preditors and neighbors and such. I'd like to have a place where I had enough land to just not worry and let them run free... at least my average quality birds. I don't think I'd dare let my Euro birds do that without some LGDs, cameras, electrified barbed topped chainlink... ect ect... LOL
BTW, I don't think I have enough mealworms, but I could mail you some beetles if you wanted to breed your own.