In a large skillet over medium-high heat, saute chicken, onion, garlic, broccoli, and ginger in oil until chicken is no longer pink and broccoli is tender, about 10 minutes. Remove from pan and set aside.
Whisk orange juice and cornstarch together and add to pan. Stir in soy sauce, and sugar. Bring to a simmer over medium-high heat, stirring occasionally until thickened. Add broccoli/chicken mixture back to pan and toss until coated. Season with salt and pepper to taste and add parsley. Serve chicken hot with rice and enjoy!