1. Preheat oven to 400°.
2. To prepare dressing, combine first 7 ingredients in a medium bowl; stir with a whisk. Gradually drizzle in oil, stirring constantly with a whisk.
3. To prepare salad, arrange torn pita in a single layer on a baking sheet. Bake at 400° for 7 minutes, stirring after 4 minutes. Cool completely. Reserve 1/2 cup toasted pita.
4. Combine tomato and remaining ingredients in a large bowl. Add remaining toasted pita and dressing to bowl; toss well to coat. Top evenly with reserved 1/2 cup toasted pita. Serve immediately.