Chael Sonnen ain't in the clear over his alleged role in a hotel fight after all ... TMZ Sports has learned he's just been hit with 11 charges -- including one felony -- over the December 2021 incident in Las Vegas.
According to court records, prosecutors filed the charges against the UFC legend last week ... hitting him with felony battery by strangulation and 10 other misdemeanor battery charges.
In the docs, officials accuse Sonnen of roughing up six people -- including one woman -- during some sort of altercation at a Vegas hotel on Dec.