In a large mixing bowl, combine the mixed greens, cherry tomatoes, mozzarella balls, pepperoni slices, black olives, and red onion.

In a separate bowl, whisk together the olive oil, red wine vinegar, Italian seasoning, minced garlic, salt, and pepper.

Drizzle the dressing over the salad and toss gently to combine.

Serve immediately, garnished with additional Italian seasoning if desired.