Sudden weird eggs

[clutternutter25]

Hello,

I have one hen (almost exactly one year old!!) that suddenly stopped laying any eggs for the past two weeks. Up to this point, she has been a great layer, laying almost daily even through winter. I have noticed two weird crispy shell membranes in the coop/under the roost. I assume these are her "eggs." None of the other hens are having trouble laying and she is very active and healthy. She is not broody either. I did move them to a new, bigger coop a few weeks ago. Her laying issues started a few days later but it could a coincidence.
Does anyone has any idea what is going on??
Thanks

 

[aart]

two weird crispy shell membranes

Post pics, please?

What all and how exactly are you feeding?

 

[clutternutter25]

This is the best photo I could get (chucked it outside a few days ago so it got dirty). I feed them organic Purina layer pellets and oyster shells in a separate container. Food is always available to them. Snacks are greens and meal worms.