John Swartzwelder, a The Simpsons writer also known for his hilarious book, The Time Machine Did It, fell way short of the mark with this western parody.
The premise is serviceable. A town overrun by bandits decides to hire a sharpshooter made famous through novels describing his adventures. Receiving the call for action while performing in a New York show, he promptly heads west.
Turns out that Pete isn't the sharpest crayon in the box. He believes he did everything in those novels, because books never lie, but he doesn't actually recall doing any of them. Also, he has no idea how to ride a horse.
It looks like the series was planned to be Pete being an idiot and his deputy saving the day behind the scenes. Which would have been fine if any of this was especially funny. But it's just not.