The College of Psychologists of Ontario, the professional licensing body that licenses him as a psychologist, took issue with some of his public statements in 2022:

In its Decision, the ICRC expressed its concern that Dr. Peterson’s comments may be “degrading, de-meaning and unprofessional.” The ICRC concluded that some of the language used in Dr. Peterson’s public statements “may be reasonably regarded by members of the profession as disgraceful, dishonourable and/or unprofessional” and posed “moderate risks of harm to the public.” The risks of harm identified by the ICRC in- cluded “undermining public trust in the profession of psychology” and “may also raise questions about Dr. Peterson’s ability to appropriately carry out his responsibilities as a registered psychologist.”

They assigned him some remedial continuing education training on "professionalism in public statements." Not sure why it's coming up again now since the court case about it ended months ago, but I think maybe he decided he's gonna take the course and expose the woke indoctrination of it or something (caving immediately just like he did on the twitter ban lmao)