I know this is an old one, but try this on for size:
Prior to the existence of a creature that was exactly a chicken, there was one that was not quite. Lets call it a chocken. At some point in the past the chocken got pregnant and gave birth to a mutant baby, the worlds first true chicken. Sperm and egg meet, first chicken is concieved, an egg forms around it as it develops and it is born. This says to me that the chicken came before the egg. Does that makes sense to anyone?
You’re assuming that the pre-chickens weren’t an egg-laying species?
The chocken, otherwise known as Gallus bankiva, is an egg-laying creature.
Since fish eggs and reptile eggs were around long before chickens, the question is only meaningful if we assume “egg” means “chicken egg.” Then the answer depends on whether you define “chicken egg” as “egg laid by a chicken” or “egg that may contain a chicken embryo.” So how you define your terms determines your answer. It’s a trivial problem.
Now, what is the sound of one chicken falling in a forest?
But there is still the issue of why it crossed the road…