Maybe Chelsea is only slightly ahead with their current performance but that doesn't mean they can win easily against Newcastle.
We know Newcastle is also a difficult club, so no one is expecting the match to be a easy win for Chelsea. We all know Chelsea have been playing well lately, but I am sure they are still going to give Chelsea a tough time. But if we can compare the way the two clubs have been playing lately, Chelsea should be able to win the match. Newcastle lost their last two matches, the last one being against Bournemouth and their match against Dortmund in the Champions League. But most people didn’t expect Chelsea to win and draw their last two matches. Chelsea played a draw against Manchester City, which was very surprising to everyone, and they won against Tottenham. With Chelsea's performance, they should be able to win the match.
Chelsea last two matches very impressive, and perhaps this will make the Blues squad more confident against Newcastle. Apart from that, Chelsea also seems to have found their rhythm, because in 8 matches in all competitions the Chelsea team only one lost. This also proves that their performance already improve, so I'll probably favorite Chelsea in that match, and will bet on them.
Meanwhile, on the other side Eddie Howe may will be not too much pressure squad Newcastle to got winning against Chelsea, and in my opinion maybe they will be play safe because there is an important schedule in the UCL which requires Newcastle players to be fit.
Chelsea are performing well and can defeat Newcastle, but he won't be and easy task, Newcastle have a tough game to play in the Champions League against PSG and they will like to defeat PSG in the match so that they can qualify for the next round of the Champions League. They will not compel their important players to play against Chelsea since they require that game and Chelsea are not competing in any competition other than the Premier League. They will try their hardest to overcome Newcastle with their main players, especially Jackson, who is a very gifted and skilled player who can position himself extremely well on the pitch. Chelsea is confident that they will defeat Newcastle because when Chelsea are playing with a big club they don't play. If you want to bet against Chelsea I think the best thing to do is to play away either half because I think Chelsea will win the game but to secure your risk, play away either half.