Chelsea's defensive weakness and frontline strikers are its flaws. Due to the newly signed players in the club, many predicted that the Chelsea team would do better than it did last season if Pochettino could get it sorted.
Even as some Chelsea players, including Nkunku, Broja, Benoit, Bettinelli, Chalobah, and Fofana, are injured at the start of the season, Pochettino is working to strengthen and improve the team's weaknesses. Even with that, Chelsea can still succeed.
Luton is not a team that would present a challenge for Chelsea to defeat. The final result between Chelsea and Luton will be 3-1 (Chelsea will win).