Put the olives, tomatoes and pickled onions in a serving bowl. Drain the mozzarella, add to the salad.
Cut the lemon in half. Set aside one half. Slice the other half into rings, then each slice into 6 wedges. Add these to the salad.
Deseed and chop the chilli - or cut the roasted pepper into thin slices. Add these to the salad.
Mix the olive oil, dill and garlic in a small mixing bowl. Squeeze in the juice of the lemon half you set aside. Season with salt & pepper. Taste and adjust the dressing to your liking.
Pour the dressing over the salad and toss well.
Let it rest for at least 2 hours, or even overnight in the fridge.
Serve with cocktail sticks on the side.