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 creamy.
02 - Measure out 1/4 cup of the blended marinade and transfer to a separate small bowl. Cover and set aside for brushing during grilling.
03 - Place chicken breasts in a large resealable plastic bag or shallow dish. Pour the remaining marinade over the chicken, ensuring all pieces are thoroughly coated. Seal and refrigerate for at least 1 hour, or up to 8 hours for deeper flavor penetration.
04 - Preheat grill to medium-high heat (approximately 400°F). Lightly oil the grates to prevent sticking.
05 - Remove chicken from marinade, allowing excess liquid to drip off. Discard the used marinade. Grill chicken for 6 to 8 minutes per side, brushing occasionally with the reserved marinade, until cooked through and juices run clear. Internal temperature should reach 165°F.
06 - Transfer grilled chicken to a serving plate and tent loosely with aluminum foil. Let rest for 5 minutes to allow juices to redistribute. Garnish with chopped fresh cilantro and lime wedges before serving.