Step 1: Cook the Bacon - In a large skillet over medium heat, cook the bacon until crispy, about 8-10 minutes. Transfer to a paper towel-lined plate to drain and chop into bite-sized pieces.

Step 2: Prepare the Tortellini - Boil a large pot of salted water. Add frozen cheese tortellini and cook according to package instructions, about 3-5 minutes. Drain and rinse under cold water.

Step 3: Whisk the Dressing - In a large mixing bowl, combine mayonnaise, red wine vinegar, salt, oregano, Italian seasoning, garlic powder, and red pepper flakes. Whisk until smooth and creamy.

Step 4: Assemble the Salad - Add cooled tortellini, chopped bacon, pepperoncini, grated Parmesan, red onion, and tomatoes to the dressing. Toss gently until evenly coated.

Step 5: Chill Before Serving - Cover or transfer to an airtight container. Refrigerate for at least 1 hour, preferably 2-3 hours for best flavor.

Step 6: Serve and Enjoy - Stir gently before serving, enjoy on its own or alongside grilled meats and Italian bread.