Most egregious episode was the one with the mind control dwarves.
It was actually toned down from what they originally wanted. Yikes!

Very cringeworthy and easily the worst of both seasons, and then some. There's got to be a making-of somewhere that explains that episode.
Yeah, the “off-think” scene was where I abandoned my series rewatch.
The three you missed out on after that episode are considerable improvements (Goral, Testimony, Dorian, with Testimony being the best of the three). But it's way too easy to understand why viewers walked out en masse with "off-think:", WTH...
No disrespect to Gerard, other than him wanting to sideline Erin Grey, but season 2 was a total misfire, and coming back after an extended hiatus due to the strike with an almost unrecognizable show didn't do anything to help them hold onto their existing audience, let alone expand it. For as much more "serious" it was supposed to be, it wasn't much, it was just less fun. And Hawk was utterly wasted after the first episode.
Too many cooks ruined the soup.
^^this
BR79 had a style and could have built on that and, unlike the handful of shows that can change format and more likely remain successful (nods at Dr Who), changing the iconic style is very risky. Many kids would not have liked the changed content (as a kid, the changes
were weird and I didn't understand it all at the time, but I stayed with it), and many adults simply may not have cared. The abandoning of Hawk (the show's new equivalent to Spock in some ways, but well-acted by Thom Christopher and made up for it) after the season 2 opener is just mindboggling, given the effort put into his premiere episode. Had there been more episodes, I'd like to think they would have returned to him but somehow I doubt it.
So many problems behind the camera and, yeah, season 1 - while not perfect - had an already iconic and unique feel and didn't need to be so fully retooled. (Now, I liked Hawk and Chrichton, but Wilma being sidelined and Huer removed in favor of Dr Goodfellow and Cmdr Asimov just didn't fully work and Wilma did not need to be sidelined.)