01 - In a mixing bowl, whisk together honey, olive oil, lime zest, lime juice, minced garlic, salt, ground black pepper, and ground cumin until well combined.
02 - Place chicken breasts in a resealable bag or shallow dish. Pour marinade over chicken and turn to ensure even coating. Refrigerate and marinate for a minimum of 20 minutes and up to 4 hours.
03 - While the chicken marinates, combine diced mangoes, red onion, red bell pepper, jalapeño, lime juice, and chopped cilantro in a medium bowl. Season with salt and pepper to taste, toss gently, and set aside.
04 - Preheat a grill or grill pan to medium-high heat.
05 - Remove chicken breasts from marinade, discarding excess. Grill chicken for 6 to 7 minutes per side until thoroughly cooked and juices run clear, reaching an internal temperature of 165°F (74°C).
06 - Transfer grilled chicken to a plate and allow it to rest for 5 minutes before serving.
07 - Slice or serve whole chicken breasts, topping each generously with mango salsa. Garnish with lime wedges and extra cilantro leaves.