I recently hard-boiled the eggs from one of my 5 chickens (I think from my speckled sussex), and the egg whites were soft and goopy, even though the yolks were well-cooked. They also tasted a little off, but were very fresh. The rest of the eggs from my flock seem fine. They all get scratch and pellets, lots of fresh greens, free range for bugs ect. Does anyone know what might be causing this?