HACKENSACK - A former Hackensack police chief's jury conviction was partially overturned today.Superior Court Judge Joseph Conte overturned Ken Zisa's conviction of two charges of official miscount and a pattern of official misconduct. The former police chief's conviction for insurance fraud and another count of official misconduct stands.Zisa, who was convicted in May, could now avoid much of the jail time he faced.Judge orders Hackensack police chief to step downHackensack police chief found guilty of misconduct, fraud