Zion Williamson is opening up about some of his struggles with his weight. The 6-foot-6, 284-pound forward, who has been criticized by Pelicans vice president of basketball ops David Griffin about his health problems, broke down his difficulty with dieting on Gilbert Arenas’ “Gil’s Arena” show. “Is it hard to diet at your age?” Arenas asked. “Be honest.” “Since it’s you, I’ll be real,” Williamson said. “That s–t hard, it’s hard man. Like, you’re 20, 22, got a lot of money — it feels like all the money in the world — man, it is hard. “But I’m at that...