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.
"Crack team" long predates video games and even crack cocaine. I think it is related to the phrase "get cracking", i.e., "get working", but I wasn't able to find a clear etymological line. One possibility is it refers to gunfire, but I wonder if it refers to harvesting, cracking corn, etc.
Notably, if someone is "cooked", it's bad. If someone is "cooking", it's often (but not necessarily) positive, most commonly in the form "let him/her cook" or "he's/she's cooking".
I have no idea where "cooked" came from, but "cooking" seems to be from the very old phrase "cooking up" which broadly meant something like "creatively making" and didn't specifically refer to food.
"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.