01 - Combine mango, lime juice, olive oil, honey, garlic, cumin, smoked paprika, salt, black pepper, and chili flakes in a blender. Blend until completely smooth and emulsified.
02 - Measure out 1/4 cup of the blended marinade and transfer to a separate small bowl. Cover and set aside for basting during grilling.
03 - Place chicken breasts in a large resealable plastic bag or shallow glass dish. Pour the remaining marinade over the chicken, turning pieces to coat evenly. Seal and refrigerate for at least 1 hour, up to 8 hours for deeper flavor penetration.
04 - Heat grill to medium-high temperature (approximately 400°F). Lightly oil the grates to prevent sticking.
05 - Remove chicken from the bag, allowing excess marinade to drip off. Discard the used marinade completely.
06 - Place chicken on the preheated grill. Cook for 6 to 8 minutes per side, brushing occasionally with the reserved marinade, until internal temperature reaches 165°F and juices run clear.
07 - Transfer grilled chicken to a clean serving plate. Tent loosely with aluminum foil and allow to rest for 5 minutes to redistribute juices.
08 - Sprinkle chopped fresh cilantro over the chicken and arrange lime wedges alongside. Serve immediately while hot.