1 Preheat the oven to 220°C (approximately 425°F). Cut ciabatta into slices and tear slices into bite-sized pieces. Spread on a baking sheet and drizzle with 2 tablespoons olive oil. Toast in oven until golden brown, about 10-15 minutes, stirring occasionally.
2 Rinse zucchini, trim and cut into quarters lengthwise. Cut slices into 1 cm (approximately 1/2 inch) strips. Rinse the tomatoes, pat dry and cut in half. Rinse bell peppers, trim and remove seeds and ribs. Cut flesh into 1 cm (approximately 1/2 inch) cubes. Drain the caperberries. Pat anchovies dry and cut into pieces. Peel the onion and chop finely.
3 In a bowl, mix zucchini, tomatoes, bell pepper, caperberries, anchovies and onion. Whisk the vinegar with the remaining 6 tablespoons olive oil and oregano and season with salt and pepper. Remove the bread from the oven and allow to cool slightly. Just before serving, mix bread with the salad.