It's a fairly common english phrase that originated out of the gaming culture of the US in the mid 2000-2010s.
"He's so good (plays aggressively) he must be on crack" sort of became "he's cracked", etc. Now that the people who were killing CoD lobbies are writing code full time or running companies, its seeped out.
Actually I think "it's cooked" came from this as well.