Place salmon skin side down on pan; drizzle with 1 tablespoon of the dressing, and season with remaining 1/4 teaspoon salt. In same large bowl, mix tomatoes and artichoke hearts with 1 tablespoon of the dressing, and toss to coat. Add vegetables to pan around salmon and potatoes. Roast 12 to 15 minutes or until salmon is cooked through, flakes easily with fork, and potatoes are fork-tender. Toss cooked green beans with remaining dressing (about 2 teaspoons), and add to pan. Place in oven 2 minutes. Top with olives.