01 - Combine mango, lime juice, olive oil, honey, garlic, cumin, smoked paprika, salt, black pepper, and chili flakes in a blender or food processor. Blend until smooth.
02 - Transfer 1/4 cup of the prepared marinade to a small bowl and set aside for basting during grilling.
03 - Place chicken breasts in a large resealable plastic bag or shallow bowl. Pour remaining marinade over chicken, ensuring each piece is thoroughly coated. Seal or cover and refrigerate for at least 1 hour, or up to 8 hours.
04 - Preheat grill or grill pan to medium-high heat. Lightly oil the grates to prevent sticking.
05 - Remove chicken from the marinade, allowing any excess to drip off. Discard used marinade.
06 - Grill chicken for 6 to 8 minutes per side, brushing with reserved marinade occasionally. Cook until juices run clear and the internal temperature reaches 165°F (74°C).
07 - Transfer grilled chicken to a plate and tent loosely with foil. Allow to rest for 5 minutes.
08 - Sprinkle chopped cilantro over the chicken and serve with lime wedges. Serve immediately.