Slit the buns, brush them with a little olive oil and place them on a heated griller. Close the lid and grill till light golden.
Spread some pizza sauce over two of the halves. Sprinkle one and half tablespoons mozzarella cheese over each. Sprinkle pepper powder and place some basil leaves and lettuce leaves on top. Spread some pizza sauce over the remaining two halves and cover the earlier halves with them.
Pack in aluminium foil and give for lunch.