Chop the romaine lettuce with a sharp knife, put in your salad spinner or a large bowl, rinse and drain very well, or pat dry.
Add the lettuce, shallots, parmesan, and lemon zest to a large salad bowl. Combine kosher salt, black pepper, lemon juice, and olive oil in a jar and pour over the salad. Toss the parmesan salad to combine before serving.