CA-1 makes a lot of sense. It contains Humboldt County and the extremely liberal city of Arcata. It used to have a Green mayor and Nader did very well in these parts.
Can't explain the other two California districts other than Libertarianism finds a lot of sympathy in suburban LA. But that is true of most suburbs in America, so I'm not sure what exactly is going on here. At least in Drier's case, it could be protest vote. And CA-28 might be because the Libertarian candidate is the only Latino candidate in a 65% Latino district.
Yes CA-01 makes a lot of sense.
Anyways, the dynamic of 3rd parties will change considerably in California now that we've gone to a runoff system.