1 Oak, back from a ban, aims to grow some security

Mike Windle 1 Oak impresario Richie Akiva

Chelsea have fun den 1 Oak returned from its seven-day state-brokered closure on Wednesday night in full force — with a seriously beefed up security team that did little to dispel neighbors’ fears.

Confidenti@l counted 12 bouncers, all dressed head to toe in black and lined…