Mammoth lakes and Manteca have two rows of multiple drive-in stations situated like gasoline pumps where one car connects to the front station and another behind it connects to another station in line with it, but not paired electrically, such that 1a through 4b, for instance, are behind 5a through 8b. Such an arrangement would also be useful for a Tesla towing a trailer to charge without having to unhitch.
I'd guess in this case it's because of the slant parking. They don't want people to back in and be facing the wrong way down the driving lane.I cant tell in the OP picture, but is there a "View" (landscape, etc, appealing view), in the direction you would be facing by heading in? I suspect so, just looking at the edge of the picture. My guess is, if there is a compelling reason for "head in" parking (a view, or some other reason a customer would want to look out the front), they might set it up that way.
Setting it up that way actually would carry some risk in people hitting the charging station, either pulling in, or pulling out. If there is some sort of appealing view however it would be worth it.
The stalls are more prone to damage that way, and the install is a touch more complicated, with more trenching and paving.