Season chicken thighs with salt and pepper, to taste.
Melt 2 tablespoons butter in a large oven-proof skillet over medium high heat. Add chicken, skin-side down, and sear both sides until golden brown, about 2-3 minutes per side; set aside.
Melt remaining tablespoon butter in the skillet. Add garlic, and cook, stirring frequently, until fragrant, about 1-2 minutes. Remove from heat.
Stir in brown sugar, honey, oregano, thyme and basil until well combined. Return chicken to the skillet. Sprinkle chicken with additional brown sugar if you want the extra sweetness.
Serve chicken immediately.
