chicken with chinese veggies and sauce

Ingredients

• 4-6 medium chicken tenders,cubed
• 1 can mandarin oranges,drained[save juice]
• 1/2 cup low salt soy sauce
• 1/2 cup creamy peanut butter
• 1/2 large root fresh ginger,grated fine
• 4-6 cloves fresh garlic,minced
• 1/4 cup white vinegar
• 1/2 cup orange juice, frozen concentrate,thawed
• 1/8 teaspoon red pepper flakes
• 1/2 teaspoon fresh ground black pepper
• 1 medium white onion,chopped
• 1 cup mixed color bell pepper,chopped
• 2 medium ribs celery with leaves,chopped
• 1 can bamboo shoots,drained
• 1 can water chestnuts,drained
• 1 can bean sprouts,drained
• 1/2 cup salted peanuts
• - handful chopped parsley
• 2 tablespoons cornstarch mixed with juice from mandrin oranges
• 4-6 - servings whole wheat spag