Preheat the oven to 180°C, fan 160°C, gas 4.
Lay the Parma ham slices on a board and cut in half lengthways. Put a slice each of pear and mozzarella in the middle of each slice of ham, then wrap up to create bite-size parcels.
Place on a baking sheet and cook in the oven for 5 minutes. Garnish with chives and serve.