Prepare the Shrimp:
In a bowl, toss shrimp with olive oil, chili powder, cumin, paprika, garlic powder, salt, pepper, and lime juice.
Heat a skillet over medium-high heat and cook shrimp for 2–3 minutes per side until pink and opaque.
Make the Mango Avocado Salsa:
In a bowl, gently combine diced mango, red onion, jalapeño (if using), lime juice, cilantro, and salt.
Assemble the Tacos:
Warm corn tortillas.
Add a layer of shredded cabbage, top with cooked shrimp, then spoon on mango salsa.