Wash the chives, shake dry and cut into 2cm lengths.
Wash the courgettes and thinly slice lengthways.
Sprinkle the courgettes with a little salt and leave to stand for 5 minutes.
Meanwhile cut the feta cheese into long sticks.
Pat the courgettes dry and place 2-3 slices slightly overlapping each other for each roll (you will make 16 rolls in total).
Spread the courgette slices with 1 teaspoon ajvar (hot pepper relish) and cover with feta cheese. Roll up the courgette slices and secure with cocktail sticks.
Place the courgette rolls in a baking dish, drizzle with oil and grill under a hot grill for 5-8 minutes. Sprinkle with chives and serve.