In a large bowl or dish, combine all ingredients except for the chicken and Aji Verde Sauce
Pound chicken breasts slightly with a mallet, not to flatten, but to tenderize. Add the chicken and toss to coat. Cover with plastic wrap and place in the refrigerator. Marinate for at least 2 hours or up to 24 hours (the longer the better).
Roasting Instructions:
Position a rack in the upper third of the oven and preheat to 425°F.
Take the marinated chicken out of the refrigerator and let it come to room temperature before cooking. Place on a parchment lined sheet pan and roast for 18 minutes. Then turn oven to broil and cook for another 3-5 minutes until charred and completely cooked through, watching closely to make sure it doesn't burn.
Transfer chicken to a platter and serve with the Aji Verde Sauce drizzled on top or on the side.
Grilling Instructions:
Preheat grill or grill pan to medium high and grease with neutral oil.
Add chicken and grill, basting with reserved marinade, until cooked through, about 6 minutes per side.
Transfer chicken to a platter and serve with the Aji Verde Sauce drizzled on top or on the side.
Notes
Storage and Reheating: Chicken can be kept for up to 3 days in the refrigerator. Serve chilled, if preferred, or reheat in an oven at 350°F until warmed through.