OK needing some help here

[Deboo7]

Ok. I've been incubating some of the last eggs this hen laid before she stopped 3 weeks ago, the eggs are set to go into lock down tomorrow so I figured I would candle them tonight. Even though I just candled 3 days ago. There were 6 late quitters which is a lot since before I've only had one late quitter around day 10 and these quit around day 14 or 15, but unlike any other time a few of these eggs were not so fresh and had been refrigerated, and one of those late quitters belonged to this hen (I don't know if it was an old refrigerated egg or not) so I cracked it open to see what went wrong and the chick inside had one eye, exposed brain where the other eye should be, scissor beak, it's organs were exposed, and it had 4 legs.. it appears that although it was a single yolked egg it tried to become identical twins but didn't quite make the split. It has 2 butts, 2 wings, one eye, 4 legs, and exposed organs and a scissor beak...could there be something wrong with her that made her lay an egg filed with a mutant? !

WARNING GRAPHIC PICs

Oh that is strange but would have made an awesome chicken!!