What is with the weird eggs?

[prancie]

For the second time in two weeks i got a weird egg from one of my hens. The color is off, it's big, and there is a big round impression on the side of it making it look vaguely like a kidney bean. We identify our eggs and hens from shape, color and texture: there is pointy, little pale, little dark and big smooth. I think this one is coming from Pointy.