In a large bowl, whisk together the hot honey, soy sauce, olive oil, apple cider vinegar, minced garlic, smoked paprika, salt, black pepper, and red pepper flakes until well combined.
Add the chicken thighs to the marinade, ensuring they are fully coated. Cover the bowl and refrigerate for at least 1 hour, or up to 8 hours for more flavor.
Preheat your grill to medium-high heat.
Remove the chicken from the marinade and let any excess drip off. Discard the remaining marinade.
Grill the chicken for about 6-7 minutes per 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.
Garnish with chopped parsley and serve warm.