Combine all ingredients except chicken in a gallon size ziplock bag.
If desired, cut the chicken breast into halves or strips.
Add the chicken to the bag and squish the bag till everything is well combined and the brown sugar is dissolved.
Refrigerate for at least 4 hours, but overnight is best.
Grill or pan sear chicken on medium heat for 5-6 minutes on each side until juices run clear and internal temperature reaches 165°. Let chicken rest for 5 minutes before slicing.
Notes
You can bake the chicken at 375° for 30-40 minutes, depending on the thickness.