Pat chicken dry and season lightly with salt and pepper.
Heat oil in a large skillet over medium-high and brown thighs skin-side down, 5–6 minutes. Flip and cook 3 minutes. Remove to a plate.
Lower heat to medium; add garlic and ginger, cook 30 seconds until fragrant.
Whisk soy sauce, honey, rice vinegar, sesame oil, and sriracha into the skillet. Simmer 1–2 minutes.
Stir in cornstarch slurry and cook until sauce thickens. Return chicken, spoon glaze over thighs, cover and simmer 8–10 minutes until cooked through.
Sprinkle sesame seeds and green onions before serving.