In a small bowl, whisk together the mayonnaise, red wine vinegar, minced garlic, sweetener, Italian seasoning, and a pinch of salt and pepper. Mix until smooth and fully combined. Allow the dressing to sit for about 5 minutes.

While the dressing is resting, slice the ham, salami, and pepperoni into ¼-inch rounds, and cube the provolone cheese. Thinly shred the iceberg lettuce.

In a large mixing bowl, combine the shredded iceberg lettuce with the sliced meats and cheese cubes. Add the halved grape tomatoes, sliced pepperoncini peppers, and chopped red onion.

Drizzle the prepared dressing over the assembled salad, and gently toss the salad until all ingredients are coated with the dressing.

Consider letting the salad chill for 15 minutes to enhance the flavors. Serve in individual bowls or on a large platter.