That'a right. Chelsea performance is currently improving, meanwhile Brentford this season is not as great as last season. As said, Chelsea players are currently in good condition, so maybe Chelsea is very capable to winning against Brentford, although based on head to head in the last 3 matches Chelsea was not able to win.
Currently I see the odds for Chelsea @1.62 while Brentford @5.29, the bookie seems to favorite Chelsea in that match. The odds are enough good on Chelsea winning, I'll try to include that match in my betting plan.
Chelsea's last few matches have shown an increasing quality of play. and it is natural that bookies favor Chelsea. Moreover, the opponent is Brentford who is not stronger than them.
Chelsea is experiencing a decline in performance and many are not sure that their performance this season will actually be able to hold Arsenal to a draw. and facing Brentford I think it's a good 3-point opportunity for Chelsea. but their performance is still up and down, maybe I won't bet on that match.