No one is saying it, so I will. Chickens don't lay 4 eggs in 24 hours. I suspect your other chickens are older than you know and are laying their eggs in Pearl's nest. You cannot tell my D'uccle eggs from each other. They all look alike, but they are laid by different hens. I suspect that is what is happening in your coop.
My earlier research said that it takes 25 hours from the time the egg leaves the top of the egg tract for it to exit the hen's body. (Somewhere I saw 23 hours, too.) Given that, it is possible for a hen to lay 2 in 24 hours but not 4. Hens will lay where the eggs are, which is why people mark the eggs they want to leave under the broody for hatching and remove extra eggs laid in the nest daily.