Chimichurri is a very flavorful and vinegary condiment made from parsley, garlic, and olive oil that is served in Argentina with grilled meats. You can make the sauce up to a day ahead and store it in the refrigerator.
4 (6-ounce) skinless, boneless chicken breast halves
Coat chicken and vegetables with cooking spray; sprinkle with salt and pepper.
Place chicken and vegetables on a grill rack coated with cooking spray. Grill chicken 6 minutes on each side or until done; grill vegetables 3 minutes on each side. Serve chicken with Chimichurri Sauce.