01 -  In a bowl, whisk together olive oil, lime juice, cumin, chili powder, paprika, garlic powder, salt, and pepper. Add chicken and coat evenly. Marinate for at least 15 minutes (or up to 4 hours in the fridge). 
 02 -  Preheat grill or grill pan over medium-high heat. Grill chicken for 6–7 minutes per side, or until fully cooked and internal temperature reaches 165°F (74°C). Let rest for 5 minutes, then slice thinly. 
 03 -  While the chicken cooks, prepare the mango salsa by combining mango, red onion, jalapeño, cilantro, lime juice, and salt in a bowl. Toss gently and chill until ready to serve. 
 04 -  Warm tortillas on the grill or in a dry skillet until pliable. 
 05 -  Assemble tacos by layering sliced chicken, shredded cabbage, and mango salsa. Add a dollop of sour cream or Greek yogurt if desired. Serve immediately with lime wedges.