I think the fact that they are jeans, rather than dress trousers or even chinos, saves the look from being a failure. Such casual trousers make obvious that this is a "fashion-forward" look, rather than a "my suit trousers are at the cleaners" look.
While it's not a look I would try to do (not even remotely), I usually like Kappelan's fits for what they are.
I would agree with this had the jacket/shirt/tie/square/shoes any stand-alone flavor. Unfortunately, he's paired a very conservative, sedate, business-like combination with jeans. To me it looks exactly like he spilled something on his pants and grabbed jeans on the way out of the house.
I will also say justifying anything as "fashion-forward" is a slippery slope. IMO you can be fashion-forward or business-dress conscious. When you mix the two (as Kap as done here), you get confusion and discord.