They are playing much better than their results and just can't put the ball in the net.
Jackson and Enzo together have an XG around 5.5 this season and only 1 goal scored between them. That's basically it in a nutshell.
Finishing will even out somewhat over time. I think the bigger issue in the longer run is that the depth in attacking/creative positions still looks really weak. As bad as Jackson and Enzo have been at putting the ball in the net, they're clearly two of their most influential players and they really lack alternatives. Mudryk, Madueke, Palmer, Gallagher, Chuks, Maatsen - its not clear at this point that any of these players are good enough to be important offensive contributors for a club with Chelsea's ambitions. Getting Nkunku back will obviously help eventually but it could be a rough ride until then.
Yeah but it wont.
Putting the ball in the back of the net and being clinical has been a long running problem for them to be fair and its gotten particularly bad in recent seasons. Its a bit of a strikers graveyard in general but their matches last season were just silly with them being hideously wasteful around the box. I mean its guys like gallagher or kovacic or kante getting a lot of the chances so you dont expect them to be clinical but their forwards have been no better (i guess most are technically gone now). Werner got a lot of grief for being wasteful but at least he scored
some of the chances. Confidence in goalscoring was in the toilet last season and it'll be an obstacle again this season.
3 at the back is a double edged sword for them. It means one less forward, it'd be us without bruno, so the costs are obvious. But their forwards are frankly rubbish and only having to play 3 of them is probably a win overall. But then their rubbish forwards struggle a bit more and get a bit more demoralised and less confident so its terrible in the long term.
They need to drop thiago and play 4 at the back. They have enough experience thats fit and performing with Chilwell, James and Sterling. It'll hurt short term, their young centre backs will have a few nightmares and cost them games, their forwards will continue to struggle for goals and they'll be midtable by christmas. But they wont be achieving anything this season anyway, top 4 was a bit of a pipe dream that probably passed when nkunku got injured.
If they settle and get their shit together uefa cup is probably manageable in second half of season, similar to how forest fared last season. Or else they shut up shop, try grind out wins keeping a slim hope of cl qalifications alive to finish around uefa cup positions anyway and still have long running problems.
Thats how i'd view it. Second is easier to keep your job doing at least in the short term. First option involves keeping a pile of 100m players happy and commited floating around midtable most of the season. No small feat and probably gets you sacked at christmas when you inevitably fail.