Cut chicken into 1 inch pieces and set aside.
In a medium skillet, combine orange juice, lemon juice, rice wine vinegar, soy sauce, brown sugar, minced garlic, ginger, orange zest, and crushed red pepper.
Cook, stirring regularly, over medium-high heat until slightly thickened and bubbly.
In a small bowl or measuring cup, combine water and corn starch and stir until corn starch is dissolved.
Add corn starch mixture to skillet and continue cooking, stirring regularly, until sauce is thickened.
While sauce is cooking, heat a small amount of oil in a separate skillet.
Add chicken and cook until no longer pink.
Combine cooked chicken with sauce and garnish with green onions, orange zest, and red pepper flakes as desired.
Serve over rice.