You are right, seeing Chelsea's potential in the Premier League is very difficult. Especially with the capital points they have and the remaining matches it will be increasingly difficult to get past the club above them. They do look to be chasing the Champions League, but even then they are still in the last 16 while the opponents they will face will be much stronger. Chelsea's Premier League play has been terrible and this season Potter hasn't produced great results against Premier League clubs.
Chelsea in the positive trend performance last two matches after winning against Leeds United and continue success come back on Champion League after defeating Dortmund. Up coming next games Leicester City are waiting for and consistency needed if want to move to top fourth standing position. Graham Potter failed bring Chelsea to the Champion League spot standing and current position have 10 points more gap with Tottenham Hotspur on the 4th standing.
Chelsea have played 25 games and depend on consistency performance on 13 games left stull have opportunity for Chelsea locking top fourth standing position, but for tittle Primer League have close and not chance yet.