Nathan Chen completed his four-year journey toward an elusive Olympic gold medal Thursday, following his record short program at the Beijing Games with a near-perfect free skate that earned him a standing ovation from supporters inside the Capital Indoor Stadium. The 22-year-old star landed all five of his quads during his “Rocketman” program to finish with 332.60 points—just three off his own world record—and become the first American champion since Evan Lysacek stood on the top of the podium in 2010 in Vancouver. Chen’s score easily outdistanced his two closest pursuers, Yuma Kagiyama and Shoma Uno of Japan, and put firmly in the past any lingering memories of his brutal disappointment four years ago in Pyeongchang. In Pyeongchang, Chen was taken out of medal contention after delivering what he called a “disastrous” short program. Afterward, he worked relentlessly with coach Rafael Arutyunyan to strengthen every aspect of his figure skating. …