After a frustrating first season at UCLA, Nico Iamaleava had a decision to make. Did the star quarterback want to go to the NFL? Find another school? Return for another year as a Bruin even though the team was in the midst of a coaching switch ? One encounter with coach Bob Chesney removed any doubt. “The first time after I met Coach Chesney, you know,” Iamaleava said after practice Saturday, “I was pretty sold on staying here.” What was it about Chesney that sold him? “I thought just his