Prepare the Signature Dressing: Begin by creating the flavor foundation of this remarkable salad. In a clean, wide-mouth jar or airtight container, combine the red wine vinegar, tomato paste, Dijon mustard, kosher salt, freshly ground black pepper, sugar, dried oregano, and garlic powder. Secure the lid and shake vigorously for 30 seconds to begin the emulsification process. Add the extra-virgin olive oil and shake again with considerable force for one full minute, ensuring all ingredients are completely incorporated into a smooth, cohesive vinaigrette. Taste and adjust seasoning with additional salt, pepper, or sugar as desired, the dressing should be bold, well-balanced, and intensely flavorful.

Assemble the Salad Components: In a large, wide salad bowl, arrange the sliced pepperoni, fresh mozzarella balls, sliced black olives, julienned red onion, colorful bell pepper strips, and both varieties of chopped lettuce. Take care to distribute the ingredients evenly throughout the bowl, creating an appealing visual presentation that ensures each serving will contain a perfect balance of all components.

Final Assembly and Presentation: Just before serving, shake the prepared dressing vigorously once more to re-emulsify any separated ingredients. Drizzle approximately half of the dressing over the assembled salad ingredients, then toss gently but thoroughly using clean hands or large salad tongs, ensuring every piece of lettuce and ingredient is beautifully coated. Add additional dressing if desired, reserving any remainder in the refrigerator for future use, it will keep fresh for up to three days. Crown the finished salad with a generous sprinkle of freshly grated Parmigiano-Reggiano cheese and serve immediately alongside warm, crusty breadsticks for the complete pizza experience.