Place all marinade ingredients in a blender and blend until pureed.
Place chicken breasts in tupperware container and cover with all but ⅓ cup of the marinade, making sure both sides are covered.
Refrigerate for at least 2 hours, up to overnight.
Refrigerate remaining ⅓ cup marinade in separate container.
When ready to eat, turn on grill to medium-high.
Place chicken breasts on grill and cook until internal temperature reads 175 degrees F, about 6-7 minutes on each side depending on the thickness of your chicken. It is always best to use a meat thermometer to ensure your chicken is cooked fully.
Top with chopped cilantro and serve with remaining marinade, for dipping.