Clean, wash and cut the peppers into large pieces. Cut pepperoni into rings. Heat oil in a pan. Fry the pepper pieces on both sides for about 4 minutes. Add the pepperoni, wash the rosemary, dab dry and remove the needles.
Season the peppers with salt, pepper and a little rosemary. Remove the paprika and peel off the skin. Mix vinegar and frying oil. Sprinkle pieces of paprika with it. In the meantime cut baguette into slices. Spread with fat.
Finely chop the remaining rosemary and sprinkle on top. Brown under the hot grill until golden brown. Arrange marinated peppers and baguette. Sprinkle with parmesan. Serve garnished with rosemary.