Clean, wash and dab dry the zucchini and cut them into slices of about 3 mm, except for 1/4 of the zucchini. Heat 1-2 tablespoons of oil in a pan. Fry the zucchini slices on both sides until light brown.
Season with salt and pepper. Remove from the pan and drain on kitchen paper. Pour cream cheese into a bowl and stir until smooth with a whisk. Peel onion and garlic and dice finely.
Cut the remaining zucchini into fine cubes. Heat 1 teaspoon of oil in a frying pan. Brown the onion, garlic and zucchini and add to the cream cheese. Season with chilli flakes, salt and pepper. Cover each slice of cheese with 1 ham and 2 zucchini slices.
Spread the cream cheese on top and smooth it down. Roll up and cut into 3 pieces. Bring the water with 1 pinch of salt to the boil, blanch the chives briefly in it and rinse with cold water.
Tie the cheese rolls with chives and knot them together.