Well, yeah, both Chelsea and Luton town are both not a so strong team, but to be honest with you, if we compare this two teams, Chelsea is stronger and most likely to win the match, so If I am all about making money, I would honestly put my bet on Chelsea, I don't think such a match has any chances of ending in a draw..
And also from the odds in the betting market, Chelsea currently have an odd of 1.2 while Luton town has an odd of 12, and draw has a odd of 6.0 on Stake.com, this means that many believe Chelsea will win.
.by the way, seeing the juicy odd Luton town has, I took a chance on them, don't mind losing it anyways.
I agree with you it should be an easy match for Chelsea they have more advantages playing at home and a better squad so there is no reason for Chelsea to lose or draw, besides that Chelsea really need a win to boost their confidence after losing the last match against West Ham 3 points will bring Chelsea up to the mid-table. We can't predict what the final score will be but for the handicap I think Chelsea -1.5 is quite safe I predict Chelsea will win by 2 goals or more or betting on Chelsea to win in the first half is also interesting, Luton Town will not be able to do anything.