Prepare vinaigrette by whisking together the olive oil, vinegar, mustard, oregano, salt and pepper.
Next, in a large bowl, add the chopped lettuces, salami, garbanzo beans, olives, tomatoes, and parmesan cheese.
Pour the dressing on top, and toss the salad very well, so that everything is well coated with the dressing.
Taste the salad and adjust the seasonings and oil/vinegar as needed.
Sprinkle with extra parmesan cheese and enjoy!
