Light brown egg shells white chalky , and rough

[free range by day]

Every single light brown egg shell ( I believe from my one and only Delaware ) has been very rough and/ or white chalky spots and raised bumps. Every single one since she started laying! Anyone know why that would be? Pic attached. I have 4 Rhode Island Reds, 2 red sex links, 1 black australorp, 1 Delaware, 2 leghorns( because I just had to, lol) . My Delaware is the only breed in my flock that would have these very light brown eggs. Also, she’s from my newest batch of chickens and I never had light brown eggs before that last group. TYIA .

 

[My First Time Farm]

Every single light brown egg shell ( I believe from my one and only Delaware ) has been very rough and/ or white chalky spots and raised bumps. Every single one since she started laying! Anyone know why that would be? Pic attached. I have 4 Rhode Island Reds, 2 red sex links, 1 black australorp, 1 Delaware, 2 leghorns( because I just had to, lol) . My Delaware is the only breed in my flock that would have these very light brown eggs. Also, she’s from my newest batch of chickens and I never had light brown eggs before that last group. TYIA .

It seems to be calcium deposits. They are still edible but maybe layoff of feeding her so much calcium.

 

[aart]

Could be too much calcium in the diet, or could just be the way she rolls.
Not all chicken lay perfect eggs.
I have had several birds that lay bumpy and/or chalky eggs.