Odd eggs...? defective shell glands?

[hwrights04]

We have an almost 5 year old Rhode Island Red who has started laying elongated, thin shelled eggs after her last molt. The whites of the eggs are very watery (they cook up fine) and the whole shell membrane (I think that’s what it’s called) comes out when we crack the eggs. (See pics) What would be causing this? Defective shell glands?
She’s very healthy, eats great, very social, & very energetic.

 

[hwrights04]

Edit to add: Shes not having any symptoms of infectious bronchitis...anyone have any ideas? Anything to worry about?

 

[rosemarythyme]

Might be just a symptom of getting older, her reproductive system isn't what it used to be.

 

[hwrights04]

Might be just a symptom of getting older, her reproductive system isn't what it used to be.

Very true. I hope that’s all it is. She seems so healthy!

 

[aart]

Looks like excessive membrane.

 

[hwrights04]

Looks like excessive membrane.

Any ideas what would cause that?

 

[aart]

Any ideas what would cause that?

Specifically? I have no idea.
Her egg factory is losing functionality, could just be age or an underlying illness.