My hen always lay an egg broken on one side

[luludaxia]

One of my hens always lay eggs with a hole or little cracks on the bigger end. Not all, but half of them are that way.
I feed my flocks with chicken layers, give them treats like scrambled quail eggs, pumpkins, rice from time to time. Crushed egg shell once or twice a week. Other chicken eggs are not broken unless they are dropped from somewhere high. I don't think the egg shells seem brittle. This hen lays on a flat surface. I wonder how it is caused and how I can avoid it.

 

[animalwild]

It seems like you're giving them enough calcium, but maybe she needs more. I would make sure she's not cracking them. Are the yolks gone?

 

[luludaxia]

No,

It seems like you're giving them enough calcium, but maybe she needs more. I would make sure she's not cracking them. Are the yolks gone?

No, it's only a little hole or some little cracks, nothing came out. I usually eat the egg.