Preheat oven to 375 degrees. Grease a 9 x 13 pan with cooking spray.
In a medium bowl combine buffalo sauce, brown sugar and soy sauce
Add the chicken thighs to the prepared pan. Brush half the sauce on the chicken.
Bake until the chicken reaches 175 degrees, 30-40 minutes. Half way through cooking brush with the remaining sauce. You can also reserve some sauce and heat it up to serve with the chicken for dipping!
Turn the broiler on high and cook until the skin gets browned and crispy, 2-3 minutes.