To make the croutons, preheat the oven to 300 degrees F. Toss the bread cubes with the olive oil and salt. spread the bread cubes in a single layer on a large baking sheet. Toast, tossing occasionally until golden, about 15 minutes.
To make the dressing, whisk together the vinegar, pickled peppers, garlic, salt and black pepper in a medium bowl. Whisk in the olive oil, kalamata olives and pimento olives.
To make the salad, toss romaine with the mozzarella or bocconcini, mortadella, ham, salami, provolone and croutons. Pour the dressing over the salad and toss to combine well.