I also agree with you. Although Chelsea are in no form, they still have the ability to beat West Ham. But on the other hand, West Ham have some players who can make things happen. The match will be quite good in that respect.
What I don't do since the beginning of this season os to underestimate any team, yes Chelsea is in better form than West ham united
but then we should not underestimate West ham united for any reason.
This season have been full of surprises right from the beginning of the season, so we can still witness a surprising result in the next few hours from now.