Pickled onions are one of the easiest, most impressive things youll ever learn to make. Theyre the type of recipe extra that will have friends texting you months later asking what was in that slaw? Theyre the perfect tangy topper for these meaty tacos. Youll often find chorizo paired with potatoes but we thought wed lighten things up a bit and swap in some zucchini (although other summer squashes would work just fine). Be sure to look for fresh chorizo, not dried spanish chorizo, which is delicious, but not quite right for these.