In a large mixing bowl, combine the drained chickpeas, cannellini beans, diced salami, turkey, and provolone cheese.
Add the diced red onion, sliced pepperoncini, and halved cherry tomatoes to the bowl.
In a small vessel, whisk together the mayonnaise, red wine vinegar, dried oregano, red pepper flakes, and minced garlic to create the dressing.
Pour the dressing over the salad ingredients and toss thoroughly with a spatula to ensure even distribution.
Season the mixture with salt and black pepper according to taste preference.
Transfer the salad to a sealed container and refrigerate for a minimum of 30 minutes to permit flavor development.