In a medium mixing bowl, whisk together olive oil, white wine vinegar, grated Parmesan cheese, mayonnaise, lemon juice, garlic salt, and Italian seasoning until smooth. Set aside.

Wash and dry your vegetables, chop tomatoes, and slice red onion and black olives.

In a large salad bowl, add American salad blend, tomatoes, onion, olives, pepperoncini peppers, croutons, and additional Parmesan cheese. Toss gently.

Drizzle the prepared dressing over the salad and toss gently to coat the ingredients.

Transfer the salad to serving bowls and enjoy immediately.