For me this scoreline isn't a beautiful win but a narrow one coming from Chelsea, it may have given them the 3 points at the end of the game lifting their position on the table but it's very risky to be certain about staying consistent with wins if they continue being unable to score much goals in their games because 1 goal isn't a safe score not until end of match at full-time. I think if they get to play Liverpool and Manchester city in their next fixtures they may not survive with just scoring 1 goal. It doesn't speak well of their attacking front.
Remember that Everton is one of the teams with the best defense in the Premier League at the moment so it is natural that Chelsea only managed to score one goal and we have to appreciate it because Chelsea has performed optimally with the many chances they created, no matter what the final score is the most important thing is they won and with this victory they secured the opportunity to get a good place at the end because there are Newcastle and Nottingham who are also competing for that place at the moment.