Kenya Moore -- There's STILL HOPE For Porsha Williams & Kordell Stewart

"Real Housewives of Atlanta" star Porsha Williams can still reconcile with her estranged husband Kordell Stewart ... that is, if Porsha's willing to put in the work ... so says her co-star Kenya Moore.

Kenya was out in L.A. Tuesday when we asked if she was shocked by Kordell's divorce filing -- and she said she wasn't ... citing a huge red flag she noticed in Porsha and Kordell's relationship.

But she says it's not over 'til it's over, adding, "It seems they just need to maybe iron some things out in their relationship. Maybe they could still make it work."