which came first, the chicken or the egg?

The chicken.

There were many eggs before there was a chicken, but there wasn’t any chicken egg until there was a chicken. It takes a chicken to produce a chicken egg.

Where did the chicken come from then?

The chicken came along in a development (or mutation) process. It came from an egg, likely, but not a chicken egg, because by definition, there is no chicken egg until there is a chicken that might lay one. If a snake lays an egg with a chicken in it, is it a snake egg with a chicken in it, or is it a chicken egg? If a chicken lays an egg with a snake in it, is it a chicken egg with a snake in it, or is it a snake egg? It’s all semantics, of course, a mere matter of naming, after all. But in the measure that the thing is named, it is named first as what it is insofar as it is something that has become recognizably that thing. The chicken thus, is named a chicken before the egg is named a chicken egg. So, the chicken came first.