Preheat and prep. Heat the oven to 425°F (220°C). Line a sheet pan with foil and set a wire rack on top if you have one. Pat the chicken thighs very dry with paper towels.
Season the thighs. Rub the chicken with oil, then sprinkle with salt, black pepper, and smoked paprika.
This simple seasoning helps the skin crisp and lays the foundation for the glaze.
Start roasting. Place the thighs skin side up on the rack or directly on the lined pan. Roast for 20 minutes to render fat and crisp the skin.
Make the glaze. In a small bowl, whisk together honey, soy sauce, rice vinegar, sriracha, chili flakes (if using), garlic, and ginger. The mixture should be thick but pourable.
Glaze and roast again. After 20 minutes, spoon or brush half the glaze over the chicken.
Return to the oven for 10 minutes.
Final glaze. Brush on the remaining glaze and roast 5 to 8 more minutes, until the chicken is deeply caramelized and the internal temperature reads 175°F to 190°F at the thickest part, not touching bone. Thighs stay juicy even above 165°F, and higher temps help them become tender.
Optional pan sauce. Pour the pan drippings and any remaining glaze into a small saucepan. Simmer 1 to 2 minutes, whisking in the butter for a glossy finish.
This step adds extra richness.
Rest and garnish. Let the chicken rest for 5 minutes. Spoon the warm sauce over the top. Finish with sesame seeds, green onions, and a squeeze of lime if you like.
Serve. Pair with jasmine rice, coconut rice, roasted broccoli, or a cucumber salad.
The sweet heat plays well with fresh, crunchy sides.