This is a huge bummer.
UFC lightweight champ Charles Oliviera just missed weight by HALF A POUND at weigh-ins on Friday ... which means he's no longer the lightweight champ.
Oliviera is slated to fight Justin Gaethje at UFC 274 in Phoenix on Saturday ... a fight that many have been excited about for months.
Charles initially weighed in at 155.5 pounds earlier on Friday ... and in title fights you HAVE to make weight.
Do Bronxs was given one hour to shed the 1/2 pound .