01 - In a blender or food processor, combine mango, lime juice, olive oil, honey, garlic, cumin, smoked paprika, salt, black pepper, and chili flakes. Blend until completely smooth.
02 - Set aside 1/4 cup of the marinade mixture in a clean bowl for basting during grilling.
03 - Place chicken breasts in a large resealable plastic bag or shallow dish. Pour the remaining marinade over the chicken, fully coating all pieces. Seal and refrigerate for at least 1 hour or up to 8 hours.
04 - Preheat a grill or grill pan to medium-high heat. Lightly oil the grates to prevent sticking.
05 - Remove chicken from marinade, letting excess drip off. Discard the used marinade. Grill chicken for 6 to 8 minutes per side, brushing occasionally with the reserved marinade, until fully cooked and juices run clear. Internal temperature should reach 165°F.
06 - Transfer grilled chicken to a plate, tent loosely with foil, and allow to rest for 5 minutes. Garnish with chopped cilantro and lime wedges before serving.