Growth?

[Cbutler]

Has anyone seen this in their eggs? No idea what it is??

 

[416bigbore]

May be this link will help?

https://www.backyardchickens.com/threads/strange-lump-in-eggs.721314/

 

[Isaac 0]

It could be some lining off her reproductive tract, as long as she's acting fine, and isn't laying those type of eggs frequently, I wouldn't do anything.