1. In a food processor, combine the diced tomatoes, red onion, cilantro, jalapeno pepper, lime juice, and minced garlic. Pulse until the ingredients are well combined, but still slightly chunky. 2. Season the pico de gallo mixture with salt and pepper to taste. Transfer the mixture to a bowl and refrigerate for at least 30 minutes to allow the flavors to meld together. 3. Meanwhile, prepare the shrimp by peeling and deveining them. If using cooked shrimp, simply rinse them under cold water to thaw if frozen. 4. Once the pico de gallo has chilled, add the cooked shrimp to the bowl and gently toss to coat the shrimp with the flavorful mixture. 5. Serve the Pico de Gallo Shrimp Cocktail in individual glasses or bowls, garnished with additional cilantro if desired. Accompany with tortilla chips for scooping up the shrimp and pico de gallo mixture. 6. Enjoy this refreshing and zesty Pico de Gallo Shrimp Cocktail as an appetizer or light meal!