Chelsea is in good home form while West Ham United are performing average at away. Previous matches between Chelsea and West Ham United have averaged 2.39 goals while BTTS has happened 48% of the time. So far this season in the Premier League, Chelsea have averaged 1.83 Points Per Game at home matches and West Ham United 1 Points Per Game at away matches.
https://footystats.org/england/chelsea-fc-vs-west-ham-united-fc-h2h-stats