In my entire life, I’ve never met an “Objectivist chick”.
Objectivist chicks were the chicks heavily into the Ayn Rand scene. They thought of themselves as rational independent thinkers but recited the Ayn Rand routine word for word. Also they were fairly humorless. However, the plus was they easily gave it up if you could fake the Objectivist routine which wasn't hard if you read her books. Usually it was no tougher than pretending that Atlas Shrugged was an incredible work of literary art despite being full of cardboard characters who apparently had no sweat glands.