I've had this chicken for 2 months. Brown bovan 12-16 months old from what I've been told. When I first got her she laid eggs of a very large size, sounded like she was hurting everytime she laid because of the size. Previous owner was feeding regular feed store laying pellets. I feed my hens organic feed and provide oyster shells, they also roam my backyard eating grass and what ever bugs they like. When I switched her food she started laying every other day and then stopped and then I started finding albumen, no shell no yolk for a few days in a row. Then I would find the albumen and membrane. Today I found albumen where she sleeps and then she went in to the nesting box to lay about 30 min later, there was a thin sandpaper she'll that broke with only the yolk. Is she still adjusting? Will this fix it's self? Or am I dealing with a disease? Any help is greatly appreciated!