In a medium bowl, whisk together the mayonnaise, red wine vinegar, minced garlic, sweetener, Italian seasoning, and a pinch of salt and red pepper flakes. Allow the dressing to rest for about 5 minutes.

Thinly slice the ham, pepperoni, and salami on a cutting board, and cut the provolone cheese into bite-sized cubes. Shred the iceberg lettuce into manageable pieces.

In a large mixing bowl, combine the shredded iceberg lettuce, sliced meats, cheese cubes, and halved grape tomatoes. Add sliced pepperoncini peppers and diced red onion, then toss gently to mix.

Pour the prepared dressing over the salad and toss everything together until evenly coated. Serve immediately in chilled bowls.