For Industry superfan Kal Penn, the opportunity to appear in the fourth season of HBO’s finance drama was an instant ‘yes.’ And then he remembered the other thing that Industry is about. “I was like, ‘Oh, but do I have to take my clothes off? I really should read it first,’’ Penn recalls. “I read the first four episodes, and I was like, ‘So I don’t get to take my clothes off? Like, why not? I could get into really good shape in three months!’” In the end, Penn didn’t have to undress, though, as doomed Tender CEO Jonah Atterbury, he does spend most of the season 4 premiere, “PayPal of Bukkake,” talking about his sex life and fetishes (and yes, Jonah does declare that he’s a big fan of what’s referenced in the episode title). After season 3 left behind the not-so friendly confines of Pierpoint, the new era of Industry finds its returning capitalists spread out, and introduces Tender, a platform originally intended to help reroute porn payments. Co-founders and longtime friends Jonah …