01 - In a mixing bowl, whisk together the maple syrup, soy sauce, sriracha, rice vinegar, minced garlic, grated ginger, olive oil, and black pepper until well combined.
02 - Add the chicken thighs to the marinade, turning to coat evenly. Let sit at room temperature for at least 15 minutes, or refrigerate for up to 2 hours for deeper flavor penetration.
03 - Preheat the oven to 400°F or set a grill to medium-high heat.
04 - Place the marinated chicken thighs on a parchment-lined baking sheet or directly onto the preheated grill grates. Brush generously with any remaining marinade.
05 - Bake or grill for 25 to 30 minutes, turning once halfway through, until the chicken is cooked through with a lightly caramelized exterior and an internal temperature of 165°F.
06 - If desired, bring any leftover marinade to a rolling boil in a small saucepan and reduce until slightly thickened, then drizzle over the cooked chicken. Garnish with sesame seeds and sliced green onions. Serve hot alongside rice, quinoa, or steamed vegetables.