I like taking part in game Jams and Ludum Dare and itch has the option to host and join game jams which is great.
So could there be a faster way to jump to game jams your taking part in or hosting?
If you go to https://itch.io/jams it should list the jams you're associated with on the top of the page. Does that work for you?
That only works after you have submitted a game to the jam when you join a jam that does not appear to work.