Preheat oven to 375 degrees F. In a large bowl, combine Pretzel Crisps, 2 cups shredded cheese, and tomatoes. Gently toss to combine. Place mixture in a baking dish, giving ingredients a light toss so that they do not lay flat. Then sprinkle with the remaining 1 cup shredded cheese. Bake for about 5-10 minutes, or until the cheese is melted.
Remove from oven, then immediately sprinkle with remaining ingredients. Serve warm, garnished with limes.