Goals from Nicolas Jackson and Cole Palmer secured another away win for Chelsea and raised serious questions about West Ham's direction under new boss Julen Lopetegui.The Spaniard looked furious as his expensively-assembled side crashed to a humiliating 3-0 defeat at home to their London rivals.Jackson scored twice, the first within three minutes of kick-off, and Palmer added a third just moments into the second half.It means all Lopetegui has to show for a £120m outlay on nine summer signings since replacing David Moyes is three home defeats, a scrappy win at Crystal Palace and a last-gasp draw with Fulham.Just five matches in and the London Stadium crowd – many of whom wanted Moyes out, despite the Scot overseeing the club’s most successful period in decades – turned on the new manager midway through the second half.Lopetegui’s decision to substitute Crysencio Summerville, who in fairness was by no means the worst performer, was met with loud boos.Moyes may well have been counting his blessings that he left when he did as he watched his old side unravel from the comfort of a broadcasting studio.All looks rosier in the Chelsea garden, by contrast, as Enzo Maresca's side secured a third straight away win and climbed, for a few hours at least, to second in the table.The tone of a chastening afternoon for West Ham was set with Chelsea’s first attack as a harmless looking free-kick found Jackson down the left.The Senegal frontman cut inside far too easily and stroked the ball through the legs of Hammers keeper Alphonse Areola at his near post.Just 15 minutes later Jackson had his second, his fourth of the season and a fourth in three appearances against West Ham.Moises Caicedo played the ball forward and Jackson strolled