Preheat oven to 400°F:
Set oven to 400°F (205°C).Season chicken thighs:
Dry chicken thighs with paper towels. Combine smoked paprika, garlic powder, onion powder, salt, and pepper in a small bowl. Evenly coat both sides of the chicken with the seasoning blend.Sear chicken until golden:
Heat 2 tbsp olive oil in a large oven-safe skillet over medium-high heat. Sear chicken for 3–4 minutes per side until golden brown. Move chicken to a plate.Sauté garlic in butter:
Lower heat a bit. Add the remaining 1 tbsp olive oil and butter to the skillet. Once melted, add minced garlic and cook for about 1 minute, stirring continuously, until aromatic. Keep an eye on it to prevent burning.Coat potatoes with herbs:
Add halved baby potatoes to the skillet. Sprinkle dried rosemary, dried thyme, and chili flakes (if using). Stir to evenly coat potatoes. Season with a pinch of salt and pepper.Deglaze with chicken broth:
Pour in chicken broth and stir to deglaze the pan. Return the seared chicken thighs to the skillet, placing them on top of the potatoes.Bake chicken and potatoes:
Place the skillet in the preheated oven. Bake for 25–30 minutes until chicken reaches an internal temperature of 165°F (75°C) and potatoes are fork-tender.Garnish with lemon and parsley:
Take the skillet out of the oven carefully. Drizzle with fresh lemon juice and top with chopped parsley. Let it sit for a few minutes, then serve directly from the skillet.