The Riverdale actor has shown off his incredible swollen hand on Instagram, captioned, "I guess that's what happens when you punch a bear in the face."
So we're guessing that's totally not what happened, but it must have been something pretty serious if his hand is that swollen!
Just recently, KJ broke his hand while filming on set of Riverdale. (Remember when he was punching the ice to save Cheryl from drowning in Sweetwater River???).
Not long after, he was in a car accident when driving home from set.
Stop hurting yourself KJ!