I can't think of any. But there are very good fish tacos at the Flying Fish if you drive a ways down Hwy. 1 to Half Moon Bay.
Guerreros at Reina del Mar and Highway 1 is excellent for a taqueria. Also try Grano de Oro, the tortilla factory, on Francisco one block south of Paloma. They have the best corn tortillas in the Bay Area, since they use fresh masa. Their food is quite good. Acapulco, across the street from Nick's in Rockaway, is run by the same family as Grano de Oro. You won't find "gourmet mexican" or New Mexico Mexican in Pacifica, but the places listed above are more than adequate.
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El Grano De Oro has good ultra-casual take-out/taqueria type food.
strangely good carnitas tacos.
that's where I go in pacifica