Juice the lemons. Cut off as many cilantro stems as you reasonably can and discard.
Peel garlic cloves and mince. Combine all marinade ingredients in blender and puree.
Spray a 9 x 13 inch baking pan with cooking spray. Place chicken tenders or breasts in the pan and pour marinade over chicken. Marinate in refrigerator at least two hours.
Bake uncovered one hour at 350 degrees. OR put on your grill and cook until internal temperature is 165 degrees and meat is no longer pink inside.
Serve with rice or shred and serve with tortillas and fixings.