I think you should not be sure about Chelsea winning the game against Fulham because they are not in the form and their team obviously is under pressure.
Yeah truly considering there performance this season the team is seriously under pressure the Chelsea team seriously need to sit down and evaluate there performance lately to figure out what that needs to be done for the team to regain it formal form because for now nothing is sure for Chelsea, even some small clubs Chelsea has a big chances of wining but they cannot so even wining Brighton this week doesn't determine there chances of wining Fulham on there next match on less improve there performance but although Fulham also is not much in a good form considering there other matches so the two clubs are just on the same form which will make there match against Chelsea very tough.
In fact, I feel that Chelsea's performance this season is not much different from Fulham's performance. So yeah, this match is definitely going to be very fierce. In fact, I predict that this match might end in a draw. There could even be the worst result, namely a victory for Fulham. Because in this match Fulham is the host.
Because I still remember last season Fulham was able to hold Chelsea to a draw at Stamford Bridge. So it is not surprising if the same thing happens at Craven Cottage stadium.
Seeing Chelsea able to have almost the same level of performance as Fulham is something I didn't even expect at all this season. But it seems that the reality is indeed what it looks like.