Begin by marinating the chicken. In a bowl, combine 2 tablespoons of olive oil, the juice of 1 lime, 1 teaspoon of chili powder, and 1 teaspoon of paprika. Add 2 chicken breasts to the marinade, coat well, and let it sit for at least 30 minutes.,

While the chicken is marinating, prepare the spicy mango salsa. In a mixing bowl, combine 1 ripe mango (diced), 1 avocado (diced), 1/2 small red onion (finely chopped), 1 jalapeño (seeded and minced), the juice of 1 lime, and a pinch of salt. Mix gently and set aside.,

Once the chicken has marinated, heat a grill or grill pan over medium-high heat. Grill the chicken for 6-7 minutes on each side or until fully cooked (internal temperature should reach 165°F). Let it rest before slicing.,

Warm the taco shells in the oven (350°F) for about 5 minutes or until they are slightly crispy.,

Assemble the tacos. Take a warmed taco shell, fill it with sliced grilled chicken, and top generously with the spicy mango salsa. Garnish with fresh cilantro if desired.,

Serve immediately with lime wedges on the side.