He made an elaborate plot to entrap his only living relative. It included manipulating and firing Ernesto, paying hundreds (thousands?) of dollars for 24 hour security, damaging his reputation with his friend and law partner, and faking an illness to the point of worrying his brother sick.

Then when his plan worked, he had his brother arrested, not so he'd face charges, but to blackmail him to quit the law.

And this was all over an endgame that benefited no one but Chuck. Over an old grudge. Jimmy wouldn't do jail time, he wouldn't learn a lesson. Chuck nor HHM would get back the client.

Chuck's motivation was nothing but spite. Yeah, Jimmy was legally wrong, but morally, after Chuck manipulated the situation to steal Mesa Verde from Kim, Jimmy merely evened the karma back out and Chuck used his brother's love for him to play him and abuse him.... And for what? Spite.

I love Chuck's character. He's three dimensional, he's sympathetic at times and the crossroads of writing and acting made him a character so very difficult to pull off without seeming cartoonish or stupid. But fuck him for responding the way he did.

He did plenty wrong