I thought this was just a lucky win for Chelsea because several times Brighton players actually had the chance to score but were thwarted by Robert Sanchez and after that in the second half Chelsea managed to score goal with pride.
Imagine that there 4 opportunities that I counted for Brighton to score goal and if all the opportunities can produce goal, I think Chelsea will lose badly against Brighton with a score of 4 which they failed to use well and I see Pochettino very proud of yesterday match even though it was luck that can be thwarted by the Chelsea goalkeeper.
Chelsea's win yesterday was a needed win in order to keep the heads of Chelsea up above the water. If they had lost yesterday's match, their moral would have been very down and their confidence level reduced. In as much as we are expecting Pochettino to master the Chelsea system and start doing well, having consecutive losses would do more harm than good to both Chelsea as a club, the coach and the players.
With the performance of Chelsea in that match, it isn't obvious that Chelsea has escaped their epileptic performance for this season yet.