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 fully combined.
02 - Add the chicken thighs to the bowl, turning to coat evenly. Let the chicken rest in the marinade for at least 15 minutes at room temperature, or cover and 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 from the bowl.
05 - Bake or grill for 25 to 30 minutes, turning once halfway through, until the chicken is cooked through and the glaze has caramelized. The internal temperature should reach 165°F when checked with a food thermometer.
06 - While the chicken cooks, pour any leftover marinade into a small saucepan. Bring to a boil and simmer until slightly reduced and syrupy, then drizzle over the finished chicken.
07 - Transfer the chicken to a serving platter, drizzle with the reduced sauce, and sprinkle with sesame seeds and sliced green onions. Serve hot alongside steamed rice, quinoa, or vegetables.