Pat chicken dry, season with salt and pepper. Heat oil in a large skillet over medium-high.
Sear thighs skin-side down 6–8 minutes until golden; flip and cook 4 minutes. Remove and set aside.
Add 2 tbsp butter to pan, sauté garlic 30 seconds, then stir in honey, soy sauce, vinegar, and sriracha. Simmer 2 minutes.
Return chicken to skillet, spoon glaze over, reduce heat, cover, and cook 10–12 minutes until internal temp 165°F.
While chicken cooks, toss shallots in flour and shallow-fry in remaining 2 tbsp butter until crisp and brown; drain on paper towel.
Uncover, spoon glaze to thicken 1–2 minutes, top with crispy shallots and parsley before serving.