In a small mixing bowl, whisk together mayonnaise, red wine vinegar, minced garlic, and sweetener until fully combined. Sprinkle in Italian seasoning, red pepper chili flakes, and season with salt and pepper to taste. Let the dressing sit for about 5 minutes.

While the dressing is resting, slice ham, salami, and pepperoni into ¼-inch pieces. Cut provolone cheese into small cubes. Shred iceberg lettuce.

In a large salad mixing bowl, combine the shredded lettuce, sliced meats, sliced pepperoncini peppers, halved grape tomatoes, and diced red onion. Pour the dressing over the top and gently toss the salad.

Taste the salad and adjust the seasoning if needed. Transfer to a serving bowl or individual plates.