Salmon Panzanella

Name: Salmon Panzanella
Ingredients: 8 Kalamata olives, pitted and chopped; 3 tablespoons extra-virgin olive oil; 1/4 teaspoon freshly ground pepper, divided; 1/4 cup thinly sliced fresh basil; 2 large tomatoes, cut into 1-inch pieces; 2 thick slices day-old whole-grain bread, cut into 1-inch cubes (see Tip); 1/2 teaspoon kosher salt; 1 pound center-cut salmon, skinned (see Tip) and cut into 4 portions; 3 tablespoons red-wine vinegar; 1/4 cup thinly sliced red onion; 1 tablespoon capers, rinsed and chopped; 1 medium cucumber, peeled (if desired), seeded and cut into 1-inch pieces