Sprinkle fish with salt and pepper. Place fish, skin side down, on a broiler pan coated with cooking spray; broil 12 minutes or until fish flakes easily when tested with a fork. Remove skin from the fish; discard skin. Break fish into chunks.
Drizzle juice and Caesar Dressing With Flaxseed over salad greens, tossing to coat. Add onion and capers; toss gently to combine. Divide salad evenly among 4 plates. Divide the salmon chunks evenly among salads. Top each bread slice with 1 tablespoon olives, spreading with a knife. Cut each slice in half. Serve immediately.
Totals include Caesar Dressing with Flaxseed.