Pat the shrimp dry with paper towels and place them in a small bowl.
Toss the shrimp with chili powder, smoked paprika, garlic powder, and sea salt until evenly coated.
In a separate bowl, combine the shredded cabbage with half of the lime juice and the fresh cilantro to create a quick slaw.
Heat the avocado oil in a large skillet over medium-high heat.
Add the shrimp to the hot skillet and sear for 2-3 minutes per side until they are pink, opaque, and slightly charred.
While the shrimp cooks, warm the corn tortillas in a dry pan or directly over a low gas flame until soft and pliable.
Slice the avocado into thin wedges.
Assemble the tacos by placing a portion of the cabbage slaw on each tortilla, followed by the smoky shrimp and avocado slices.
Drizzle the remaining lime juice over the tacos and serve immediately.