In a medium bowl, combine the diced mangoes, red bell pepper, red onion, jalapeño, cilantro, and lime juice. Mix well and set aside to allow the flavors to meld.
In a small bowl, whisk together the olive oil, garlic powder, paprika, salt, and pepper.
Place the chicken breasts in a large resealable bag or a shallow dish. Pour the marinade over the chicken, ensuring all pieces are coated well. Seal the bag or cover the dish and let it marinate in the refrigerator for at least 30 minutes (or up to 4 hours for more flavor).
Preheat your grill to medium-high heat.
Remove the chicken from the marinade, letting any excess drip off.
Place the chicken on the grill and cook for 6-7 minutes on each side or until fully cooked and reaches an internal temperature of 165°F (75°C).
Once cooked, remove the chicken from the grill and let it rest for 5 minutes before slicing.
Serve the grilled chicken topped with the freshly made mango salsa.
Notes
Arrange the sliced chicken on a large platter and generously spoon the mango salsa over the top. Garnish with additional cilantro and lime wedges for an added pop of color.