Pierce the chicken breasts a few times with a fork, both sides.
Mix all the other ingredients, either using a bowl and whisk, or a blender on low speed, until thoroughly combined.
Put the chicken and marinade into a zip-lock bag, making sure the chicken is completely coated. Press out all the air from the bag and seal completely. Marinate for 30-60 minutes.
Preheat the oven to 400°F.
Take the chicken out of the bag (save the sauce) and place in a small, uncovered roasting pan.
Roast for 20-25 minutes. Once or twice during cooking, pour a few spoonfuls of marinade over the chicken pieces.