THIS MAY COME as a surprise to no one, but Halsey is pretty good with a knife. Today she is wielding it against a cucumber, which would seem like a joke or a meme — given her man-eater rep in the pop-star pantheon — were it not for the bowls of lettuce idling nearby. “I’m kind of on autopilot,” she says over her shoulder, blade flashing. A few days back, she’d thrown friends an Easter feast of “baked ziti, rosemary rack of lamb, garlic Parmesan chicken, angel-hair pasta, meatballs, a fillet, mashed potatoes, bacon-wrapped asparagus, green beans and roasted potatoes,” she says. And this being L.A., “It kind of stressed me the fuck out because I was like, ‘Of the four trays of ziti I’m cooking, which one’s vegan?…
