Preheat oven to 400°F. Trim excess fat from chicken and season both sides with salt and pepper.
In a large oven-safe skillet over medium-high heat, melt half of the butter. Sear chicken for about 3 minutes per side until golden, then transfer to a plate.
Add remaining butter to the skillet. Once melted, add garlic, brown sugar, oregano, and thyme. Cook for 1–2 minutes until fragrant.
Return chicken to the skillet and spoon the garlic sauce over the top.
Transfer skillet to the oven and bake for 25 minutes, or until the internal temperature of the chicken reaches 165°F.
Spoon sauce over chicken before serving.
Notes
Pairs well with roasted vegetables, mashed potatoes, or a crisp green salad. For extra caramelization, broil for 2-3 minutes after baking.