Lately one of my hens has been laying some really big eggs and they are sometimes misshaped. In fact some of them are so big that I can't close the palm of my hand around them(and I have big hands). The small end looks as if it's going to be a regular sized egg but then the middle and butt of the egg is quite large. It doesn't affect the way they taste though. They're delicious!
One of the big eggs
It's difficult to get a good picture of exactly what I'm talking about.