Weird Item in nest (Hens not laying) - Help Please

Our hens have not being laying for several months, the issue may have started after some bad food. Since when almost no eggs. Two of the 4 birds have molted and the daylight is now very short.

I have now found a second of these weird egg like things, in the nest (See below).

They are rubbery and are like onion layers.

I have seen some similar for when birds have infection but they are not uniform like these.

Appreciate any feed back.

I have wormed the birds and they are on a good protein laying pellets and scratch feed every day.









Regards,

Phantom