Artichoke-and-Beef Lettuce Wraps

1/2 pound deli roast beef, sliced into thin strips

1 small zucchini, thinly sliced

1 cup chickpeas, rinsed and drained

1/4 cup reduced-fat grated Parmesan

1/4 cup packed fresh basil

2 tablespoons capers, chopped

1/4 cup fresh lemon juice

1 teaspoon olive oil

1/2 teaspoon salt

1/4 teaspoon freshly ground black pepper

16 lettuce leaves (such as butter or romaine)