Chad Ochocinco is already getting territorial in his new locker room -- in fact, we're told Ocho has made it clear to his new MLS teammates ... no one better touch his locker while he's gone.
Ocho temporarily skipped town after his Sporting Kansas City trial ended on Monday -- but we're told he'll be back as soon as next week ... and wants all his stuff to stay exactly the way he left it.
Pretty demanding for a backup player.
As we previously reported, Ocho's been named an honorary SKC reserve -- which means he can train with the team
... but doesn't get paid.
Despite bench rider status -- a source close to Ocho tells us, he wants his teammates to know he's taking the soccer gig seriously.