Of course, Chelsea is the favourite of people but anything can happen, this is the kind of match in which a few people get rich if it works in the opposite way. Imagine the straight winning of a sports betting site I just checked, it's 1.27 against 11, it will be more elsewhere, and that's crazy. My mind is telling me differently now, not just supporting a mindblowing winning for Chelsea but they could still win. It might be that winning would be tougher for them than people think. Chelsea has all it takes to win over Luton Town but they have to do better than their initial game. Finger crossed!
Isn't there no reason for Chelsea to lose? they have everything with expensive players, a more active transfer market and financial stability. So when Chelsea had to lose to Luton it indicated that Chelsea had failed for the second time in improving their players. But if Chelsea wins, it doesn't make them any better, because their opponent Luton with his status anyone can tell if Luton loses it's not a surprise. Precisely the opposite effect is that Chelsea will become the object of ridicule if they lose at home.
Chelsea's form hasn't been great yet, but they have to be confident in their progress. Hard work and good strategy can support better player performance, but they may take a little longer considering the adaptation of some of the new players. I believe in Chelsea's development progress, but as I said they really need time. I can expect Chelsea to improve in form in the first 5-10 match, but it really depends on how Pochettino plans something better.
Now is not the time to debate Chelsea's performance after two unsatisfactory matches. They are still not great despite their expensive players, but maybe they will get better with time. About the match against Luton, I think Chelsea will win that match easily.