Preheat the grill or a grill pan over medium-high heat.
In a bowl, prepare the mango avocado salsa by combining the diced mango, avocados, red onion, minced chili, lime juice, and a drizzle of olive oil. Gently fold the ingredients together, being careful not to mash the avocados. Season with salt and pepper to taste, and set aside.
Pat the chicken breasts dry with paper towels, then season both sides with cumin, salt, and pepper.
Brush the grill or grill pan with a little olive oil to prevent sticking. Place the chicken breasts on the grill and cook for 5-7 minutes on each side, or until they reach an internal temperature of 165°F (75°C) and have nice grill marks.
Once cooked, remove the chicken from the grill and let it rest for 5 minutes.
Serve the grilled chicken topped generously with the mango avocado salsa. Garnish with fresh cilantro for an extra burst of flavor.
Notes
Serve the chicken on a wooden cutting board or a colorful plate, with extra salsa on the side and lime wedges for an added touch of freshness.