Brandon Jay Mclaren -- Go Go Away Power Ranger ... Wife Wants Split

Brandon Jay MClaren, who used to kick ass as the Red Ranger, ain't feeling so mighty right now -- his wife has filed for legal separation.

According to court docs, MClaren's estranged wife, Mieka Tennant, is seeking a split after nearly 3 years. They don't have any kids, but Mieka -- a big time Hollywood publicist -- is demanding spousal support during the separation.

MClaren's "Power Rangers S.P.D." days are long gone, but he's nabbed roles on "The Killing," "Falling Skies" and "Graceland."

Tennant will disagree, but BJ's still Zord of the Manor to us.