Egg with thin top (pics)

[Mouthwash]

My 10 month old chickens took a break laying eggs when the temp dipped into the negative 30s. We'll today we got 2 eggs but one was a little off. The shell was thin and bumpy at the top and when I slid my finger across it a piece broke off the egg white leaked out. The hole is where the piece of shell broke off with my finger. I've noticed eggs with this lumpy texture on the top before but it never was cracked and thin like this. They have access to calcium at all times (I never see them eat it) and eat egg layer crumble. No one's acting off.

 

[rosemarythyme]

My guess is the bird that lays the eggs with the lumpy tops is the same one that laid this. Something about how her shelling gland applies the shell on that end.

 

[Mouthwash]

My guess is the bird that lays the eggs with the lumpy tops is the same one that laid this. Something about how her shelling gland applies the shell on that end.

Is there anything I can do to help her?

 

[rosemarythyme]

Is there anything I can do to help her?

If you know which bird is laying the weird eggs you could try giving her some calcium citrate tablets or mixing in a bit of calcium into a little wet feed for a private breakfast, but it may not make a difference (if you go this route, supplementing 1-2 weeks will give you the answer if it helps or not). She likely has sufficient calcium to form shells but something's wonky in the process