Preheat oven to 200°C (390°F). Line a baking dish with baking paper, place chicken breast on it. In a small bowl or cup, combine soy sauce and ginger and spoon half of the mixture over chicken breast. Bake for 10 minutes, baste with remaining mixture and cook for 5 more minutes, or until cooked through. Remove from oven and set aside.
In a medium bowl, combine cabbage, silver beet and almonds. In a small bowl, combine yoghurt and mayonnaise. use two-thirds of this mixture to coat slaw.
Cut chicken into thin slices. Serve chicken with rice or quinoa and slaw, garnish with sriracha, if using, and remaining yoghurt mayonnaise.