RuPaul's Drag Race Winner -- Popped for Mary Jane

The drag queen who shante'd his way to the championship on "RuPaul's Drag Race" Season 2 was arrested in Georgia this week ... all over a teeny, tiny package ... of weed.

According to the Gwinnett County Detention Center, 23-year-old James Ross -- better known by his fabulous alter-ego Tyra Sanchez -- was arrested Tuesday night for being in possession of a small amount of marijuana ... less than one ounce.

Officials tell us Ross was allowed to sashay his way out of jail the following day after posting bond.

8:25 AM: According to the police report, obtained by TMZ, Ross was a passenger in a Chevy Impala that had been pulled over for having illegal window tint.

The officer claims he could "smell an odor of raw marijuana" -- and conducted a search of the car. The officer claims he found "loose green leafy material consistent with marijuana" inside the vehicle ... so he arrested both Ross and the driver for weed possession.