Chelsea played well in the recent two games they had first in Premier League they beat Leeds and got an important three points which had a good effect o the atmosphere of the team and then when everyone including myself was thinking they will lose the game against Dortmund the won the game with a 2-0 result but still they are 10th of the table and they got only 34 points that's why they have a long way to reach the top teams in the league.
I think this two recent games of chelsea are their best game they have performed so well for the season. The improvement of Chelsea is a good development despite the season has gone so far. If Chelsea continues end up with good result in every game it is a good improvement against next season and will definitely make Graham Potter to last as Chelsea coach. If Chelsea succeed in defeating Tottenham in their next game then it is an evidence that their performance is stable.
I would say that the two Chelsea wins have been lucky. because, as far as my observation. the system that Potter implemented, did not go according to what he implemented. seriously, this is the problem. plus, the front line players they have are barren in terms of scoring goals. Chelsea's victory over Dortmund was a fortune, especially the second goal that Chelsea created. Kai Harvertz was only able to score goals through penalty kicks. Potter should have given more opportunities to other strikers, like Auba for example and that is the problem for Chelsea's front line. unfortunately, Auba was not included by Potter in the list of teams playing in the Champions League.
next Chelsea will visit Leicester headquarters, we will see how Chelsea's consistency is in the next match. however, don't get your hopes up if Chelsea will win the game with a landslide score.