In a medium bowl, whisk together Greek yogurt, olive oil, red wine vinegar, pepperoncini brine, Dijon mustard, grated garlic, dried oregano, and red pepper flakes until smooth.

In a large mixing bowl, combine garbanzo beans, white beans, diced turkey breast, diced salami, green bell pepper, cherry tomatoes, sliced pepperoncini, red onion, parsley, and cheese.

Pour the dressing over the salad mix and gently toss until everything is well coated.

Cover the bowl and refrigerate for at least 30 minutes before serving for flavors to meld.