Place first 5 ingredients in a blender or food processor, and pulse several times or until well-blended. Place 1/2 cup olive mixture in a large bowl; add shrimp, and toss to coat. Add remaining olive mixture to salad greens; toss to coat. Divide greens evenly among 4 plates, and top with shrimp mixture and tomato. Sprinkle with parsley and pepper. Serve with bread.