UFC's Chris Weidman Targeting Jon Jones, 'I'll See You Soon'

Jon Jones has NEVER been beaten (no, the DQ doesn't count) ... but Chris Weidman says he's gonna be the guy to hand Bones his first real "L" in the UFC Octagon!!!

Weidman -- the former middleweight (185lb.) champ who recently jumped to light heavyweight (205lbs.) -- has been Twitter beefin' with Jon ... and both guys seem down to a scrap. 

TMZ Sports talked to Chris at LAX earlier this week ... and the UFC star had a short, but ominous message for Jones.

"See you soon, Jon."

After winning his first 13 pro fights, Weidman's been in a slump ... losing 4 of his last 5 fights -- taking L's from killers like Yoel Romero and Luke Rockhold.

Still, Weidman is the guy who took out Anderson Silva (TWICE) -- and the 35-year-old former champ feels he's got what it takes to stick it to Jones too.  

"I definitely think I have the tools to beat him."

But, Chris knows he won't just be handed the title fight ... "I gotta fight some other guys first, but at some point, [Jon's] the goal."

Chris also tells us who else is on his UFC hit list (hint: he badly wants to avenge a loss) ... and answers an age ol' and fiercely debated question.