2Place half the artichoke marinade into a large skillet over medium-high heat, and brown the chicken pieces until the liquid has almost evaporated, 8 to 10 minutes. Remove the chicken pieces with a slotted spoon, and place into a 9x13-inch baking dish.
3Pour the remaining marinade into the same skillet, and cook and stir the onions, garlic, mushrooms, oregano, basil, salt, rosemary, and black pepper until the onions are translucent, 5 to 8 minutes. Mix in diced tomatoes with their juice, tomato sauce, black olives, and chopped artichoke hearts. Stir the sauce well, and pour over the chicken in the baking dish. Cover the dish with foil.
