Combine chicken, ginger, and salt in a large bowl, tossing to coat. Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add chicken, and cook for 6 minutes or until browned on all sides. Add sake and next 4 ingredients (through lemon juice); cook 1 minute. Cover, reduce heat, and simmer 10 minutes or until chicken is thoroughly cooked. Remove chicken from pan; keep warm. Bring sauce to a boil. Cook until sauce is reduced to 1/2 cup (about 5 minutes). Return chicken to pan, turning to coat. Sprinkle green onions over chicken.