What is going on with these eggs?

[Wyorp Rock]

Clucky had been feather picking and has since been wearing blinders. Which is about the time this started. Maybe it’s stress?

Some of it could be stress.
Feather picking - what is the protein% of your feed?

How much Black Soldier Fly Larva?
Do you provide oyster shell free choice too?

I agree, I'd focus on them eating a nutritionally balanced poultry feed and cut way back on treats. See if shell quality improves.

If they are not sleeping in the coop except when it's cold (winter?) then the coop space may still be too tight for them, poorly ventilated, mites/lice(?), etc.

They get black soldier fly larva, fruits & veggies.

There was a feather picking issue (see reply to other question in this thread). Their run is about 100-120sqft. (Sand) Coop is adequate for the four girls(5’ wide 3’ deep 4’ tall)(well ventilated), they sleep outside in the run on top of the coop through the spring summer and fall.Two nesting boxes.