The Big Bang Theory, and anything else to do with what happened in the universe prior to the appearance of life on Earth has absolutely nothing to do with the theory of evolution, which deals only with how life forms change once they have come into existence.
FWIW, the BBT exactly corresponds with what the Bible says: the universe came into being from nothing.
The previously commonly held theory of a steady state universe is actually much more congruent with atheism.
One of these two is a strict evolutionist; but he's not the most likely to propagate his genes.
(I'll bet you thought I was going to post a pic of Kaley Cuoco...)