Skinny Pete is one of Jesse's closest friends. Early on, Skinny hooks Jesse up with Tuco Salamanca, a bad-ass drug dealerr Skinny met in jail, but Tuco steals Jesse's meth and beats him up.

After Hank Schrader kills Tuco in a shootout, Walt and Jesse begin distributing meth on their own. Jesse, in charge of the street operation, enlists Skinny Pete and two other friends, Combo and Badger, as dealers. Before long, a junkie couple steals meth from Skinny, but his rep stays intact based on the rumor that Jesse retaliated by crushing the male junkie's head with an ATM.

Everything goes fine until Badger gets busted and Combo is murdered for invading a rival gang's turf. Afraid of being murdered himself or sent back to prison, Skinny quits dealing and informs Jesse that he's lost his street cred because everyone knows Jesse didn't kill the junkie after all.

Skinny Pete agrees to deal again after Jesse starts skimming excess meth from Gus's superlab. Pretending to be in recovery, Skinny and Badger attend Jesse's NA meetings and slyly hype the blue meth, but the two begin following the 12-step program for real and can't bring themselves to undermine addicts attempting to stay clean.

To numb himself after shooting Gale Boetticher, Jesse begins using meth more heavily and tempts Skinny Pete and Badger back into using too. Jesse craves still more distraction, though, and throws a multi-day drug party that wears out even his two hardcore friends.