Cut skinless salmon into 1-inch pieces.
Marinate the salmon pieces in reduced-sodium soy sauce, sesame oil, lemon juice, mirin, and garlic powder for 15 minutes.
Preheat the broiler.
Arrange the salmon pieces on a foil-lined baking sheet.
Broil the salmon until crispy on the edges and cooked through.
Brush the salmon with ginger-soy glaze and sprinkle with chives and sesame seeds.
