Neither goalie is playing well.
Don't discount the type of style they are playing though. If the Kings play this style all year, they could have 3 guys hit 80 points and Doughty would be a good bet to win the Norris. I remember not so long ago when Quick was lights-out and many bemoaned that Kopitar wasn't producing to his pay level. That Brown had fallen off a cliff. That Doughty might never hit 60 points again. They had down years for sure, but this year all three of those guys could have career campaigns. But look what's happening on the back end.
I don't buy into the Quick is a system goalie narrative, but now that the last vestiges of the Sutter/Stevens style of play have been erased, he's seeing far different types of shots than he previously did. He knew exactly what was coming for the last 7 or so years, the team had very methodical strategies which forced the other teams into certain types of shots. It's not so much that shots allowed were easier to handle, it's that they were predictable. Even when the wheels were flying off that structure kept them in the top in GAA. And it didn't matter who came in, really. Outside of Zatkoff, pretty much every goalie experienced success once they adjusted to what the defense was allowing. Now, shit is literally all over the place. Campbell was in the same system for three years, so he's likely seeing the same thing. The difference with Quick now is he's not coming up with the game changers. Doing that is a lot easier when you only have to do it once in a while, when it's constant it's far more difficult. I say Quick, but the same goes for Campbell too. The opposition heat maps this year have looked like there is a pool of blood in front of the Kings goal. Even 2 years ago everything was to the outside. Both goalies are letting in pucks from sharp angles, that suggests they are worried about the middle and are aren't confident the shots are coming from the outside.
This team is going to find a happy medium and I expect the goalies to improve while the offense backs off a little. Either way the team probably won't win a lot of games unless they improve their reads. If they can funnel opposition shots from areas they want and still maintain that offensive push, they'll be in business. I don't see it happening with this blue line as constructed, but weirder things have happened I suppose.