Bryce Hall Gunning To Fight KSI After Austin McBroom, 'He's Talking Crazy About Me'

Bryce Hall hasn't even thrown down in his first official boxing match yet ... but he's already planning #2 -- explaining Wednesday he wants a scrap with KSI badly!!!

The TikTok superstar -- who's all set for a celeb fight with YouTuber Austin McBroom next month -- said on "TMZ Live" he's got a beef brewing with KSI that he wants to settle in the ring next.

"KSI -- the one that beat [Logan Paul] -- was talking crazy about me," the 21-year-old said. "So, I mean, I'm down to do him next."

As for how the feud between the two social media stars started ... it's unclear, but they've exchanged verbal jabs repeatedly on Twitter over the last few weeks.

In fact, KSI trolled Hall after his wild brawl with McBroom in West Hollywood on Tuesday ... showing a picture of Bryce and asking, "You good?"

The fight would be an interesting one -- KSI is considered one the best boxers from the social media world -- but, of course, Hall's gotta get through McBroom first.