I have several chickens that have been laying with no issues. All eggs look wonderful... Just got a new pullet egg that looks like this! What is going on??? We have no roosters!
Meat spots. They are just bits of tissue that broke off the oviduct when the yolk was released. Some hens frequently lay eggs like this, other times, it's just stress-related. Completely normal, and the eggs are fine to eat/use.