Cut the chicory in half (lengthwise).
Cut the zucchini diagonally into 1 cm thick slices.
Season both with salt and pepper, then rub with half of the oil. Sprinkle the chicory with the sugar.
Heat a griddle pan or barbecue and cook the vegetables until soft and slightly grill-striped.
Meanwhile, mix the olive paste with oil, vinegar and lemon juice, season if needed.
Arrange the grilled vegetables on a plate, scatter the olive and capers around them then pour the dressing on top.
Serve warm or at room temperature.