ESPN journalist Gabriele Marcotti has not been impressed with one thing Nicolas Jackson keeps doing during games. Nicolas Jackson scored in Chelsea‘s 2-2 draw with Brentford last Saturday and shushed the home supporters during his celebration. It is not the first time the striker has done it this season and Gabriele Marcotti, who was speaking about his antics on The Gab & Juls Show, has now told him to stop doing it. Jackson’s header at the Gtech Community Stadium was his eighth in the Premier League this term and 11th in all competitions. The 22-year-old is leading the line for Chelsea at the…