For sauce, combine orange juice, soy sauce, cornstarch, ginger and garlic powder in a small bowl. Set aside.
Pour cooking oil into a large skillet or wok. Heat over medium high heat. Add broccoli and frozen peppers to skillet. Cook and stir about 3 minutes or until vegetables are just tender. Remove vegetables from skillet. Add ham to skillet; cook and stir about 1 minute or until heated through; push ham to edges of skillet. Stir sauce; add to center of skillet. Cook and stir until thickened. Return vegetables to skillet. Cook and stir about 1 minute more or until heated
through. Sprinkle with sesame seeds.