But it is. I buy them almost every week, because most normal eggs taste foul or even like old fish to me. And they are normal Chickens, just fed with peas.

Maybe they are a special breed. They don't look very special, though. I made the connection because all they eat is green. So it seems logical.

Pretty sure the stuff they eat is also important for the color. Chickens that only eat peas create very good eggs and the eggs are green.