I suspect your wrist pain might be developing due to the wrist being used as a shock absorber when playing chords. When you play a chord, watch what your wrist is doing. Are you pushing the fingers into the key, collapsing the support of the fingers at the knuckle, and thrusting the wrist into a high position? In other words, does your hand look like it is clawing the chord with a high wrist? If so, this is how “weight” is being interpreted and put into physical action.
I also noticed whilst trying to observe what I was doing wrong how much tension I'm carrying in general... I noticed my shoulders are pretty much permanently tensed up so I should probably work on that too.