Place chicken in a lightly greased shallow casserole dish. Combine orange juice and wine or broth; drizzle over chicken. Sprinkle with seasonings. Bake, uncovered, at 350 degrees for 30 minutes. While chicken bakes, sauté onion, tomato and mushrooms in oil until tender. Spoon vegetables over chicken; return to oven and bake, uncovered, for 30 additional minutes, or until chicken tests done.