01 - In a mixing bowl, whisk together lime juice, olive oil, minced garlic, honey, chili powder, ground cumin, paprika, salt, and black pepper until fully combined.
02 - Place chicken breasts in a resealable bag or a shallow dish; pour the marinade over chicken pieces, ensuring thorough coating. Refrigerate for at least 15 minutes and up to 2 hours for deeper flavor infusion.
03 - Preheat grill or grill pan to medium-high heat in preparation for cooking the marinated chicken.
04 - Remove chicken from marinade, letting excess drip away. Grill each breast for 6 to 8 minutes per side, or until internal temperature reaches 165°F, and juices run clear.
05 - While chicken is grilling, combine diced avocado, cherry tomato halves, chopped red onion, and fresh cilantro in a bowl. Lightly season with salt and gently toss to mix.
06 - If using cheese, sprinkle shredded Monterey Jack or Cheddar over the chicken during the final 2 minutes of grilling to allow melting.
07 - Plate grilled chicken breasts and top with the prepared avocado mixture. Finish with fresh lime juice and additional cilantro and lime wedges as desired.