Each week, William Lee and Nina Metz recap and discuss the fourth season of “The Chi,” which airs at 8 p.m. Sundays on Showtime. To paraphrase The Kinks, paranoia will destroy ya. Such is Emmett’s reality these days. And when he finally confesses his affair to Tiff, he does it at the worst possible moment, coitus interruptus-style. Kevin and Jake go on a college tour, thanks to their swanky ...