Pat the shrimp dry and place them in a bowl. Add the olive oil, kosher salt, cumin, coriander, chili powder, garlic powder and cayenne. Toss until the shrimp are evenly coated.
Combine the cabbage, cilantro, scallions and lime zest in a medium bowl.
Add the Greek yogurt, sour cream, Kewpie mayo, cilantro, pickled jalapeños, garlic powder, kosher salt and lime juice and mix well.
Taste and add more pickled jalapeños or lime juice if needed.
Add enough of the cilantro lime sauce to coat the cabbage mixture and toss well. Reserve the remaining sauce for serving.
Heat a lightly oiled skillet over medium-high heat. Add the shrimp in a single layer and cook for about 2–3 minutes per side, until golden and just cooked through.
Warm the tortillas in a dry hot skillet until soft and pliable, flipping once.
Fill each tortilla with cilantro lime slaw, shrimp and sliced avocado. Finish with more cilantro lime sauce and hot sauce.
Serve right away.