It is possible for a hen to lay 2 eggs in one day. My biggest hen started laying her eggs on my back porch bench and she doesn’t do it until I come out with my cup of joe in the morning (chicken coup is about a half acre away from the back porch). This morning she layed the biggest egg yet however came back at 7pm and layed another (about half the size). I was excited for a minute thinking this is one awesome hen however she then ate the egg shell (for the first time). Researching now to make sure nothing is wrong with her 
