01 - Pat the chicken thighs dry with paper towels to ensure proper seasoning adherence and crisp skin.
02 - In a large bowl, whisk together olive oil, apple cider vinegar, brown sugar, smoked paprika, garlic powder, onion powder, chili powder, salt, and black pepper until well combined.
03 - Add chicken thighs to the bowl and toss to coat thoroughly. Let marinate for at least 15 minutes, or up to 4 hours in the refrigerator for deeper flavor penetration.
04 - Preheat grill to medium-high heat or preheat oven to 400°F.
05 - Place chicken thighs skin-side down on the grill. Cook for 6–7 minutes until skin is crispy and marked. Flip and brush generously with BBQ sauce.
06 - Continue grilling for 25–30 minutes, turning and basting with additional BBQ sauce every few minutes until cooked through and slightly charred. Internal temperature should reach 175°F.
07 - For oven preparation, arrange marinated thighs on a foil-lined baking sheet, skin-side up. Roast for 30–35 minutes, brushing with BBQ sauce every 10 minutes until skin is caramelized and chicken reaches 175°F internally.
08 - Remove from heat and let chicken rest for 5 minutes to allow juices to redistribute. Serve with additional BBQ sauce on the side if desired.