Believe it or not, a hen’s diet affects her eggs. If she’s eating a lot of certain plants (like cottonseed meal), it can make the whites watery. It’s a weird farm fact, but true.
Also, younger hens lay firmer eggs. Older hens? Their eggs are a bit more, uh, relaxed. So your watery egg might just be a senior citizen.
Don’t blame the hen, though. She’s just doing her job. You’re the one who bought the eggs, so maybe blame your shopping choices? (Kidding. Mostly.)