Sometimes the area right under the white of the egg will appear green. The first time you see this is, it may be a little off-putting. Don't worry, it is still safe to eat. There are two different ways to try to avoid this. The first is to make sure not to overcook your eggs. A little less time cooking will solve the issue. The second is to make sure you quickly cool off cooked eggs at the end of cook time. The faster you can bring down their internal temperature, the less likely your eggs will develop that green layer. An ice bath is the quickest way to achieve this.