Arrange scaloppine on waxed paper or plastic. Sprinkle veal with parsley, salt and pepper. Place a thin layer of cheese and a few slices of roasted pepper on each scaloppine. Roll veal and wrap each roll with a slice of pancetta. Secure with toothpicks.
Fry veal rolls in a thin layer of extra-virgin olive oil, 2 turns of the pan, until golden all over and pancetta is crisp, 5 or 6 minutes. Remove from pan to warm platter. Return skillet to heat. Add a drizzle of oil and cracked garlic. Wilt spinach in pan, add a touch of wine or vermouth to lift drippings and combine them with greens. Using tongs, place a bed of spinach on each dinner plate and top with veal rolls. Serve immediately.