On Friday he added theatrical flourishes and injected campy, knowing winks during songs such as “Killer Queen,” where he primly crossed his legs while fanning himself, and the bombastic “Bicycle Race,” where he sat on a spinning motorcycle as he hit falsettos. Lambert’s delivery was not about mimicking the icon but rather about reverence, his gratitude for the position evident when he thanked Queen’s co-founders, guitarist Brian May and drummer Roger Taylor, and paid homage to Mercury.