In a large bowl, whisk together the coconut milk, lime juice, soy sauce, honey, minced garlic, ground ginger, red pepper flakes, salt, and pepper until well combined.
Add the chicken thighs to the marinade, ensuring they are fully coated. Cover and refrigerate for at least 1 hour, or up to overnight for maximum flavor.
Preheat your grill or a grill pan over medium-high heat.
Remove the chicken from the marinade and let any excess drip off. Discard the marinade.
Grill the chicken for about 6-7 minutes on each side, or until the internal temperature reaches 165°F and the chicken is nicely charred.
Remove the chicken from the grill and let it rest for 5 minutes before slicing.
Serve the chicken garnished with fresh cilantro and lime wedges on the side.