For sauce, combine orange juice, soy sauce, cornstarch, ginger, and garlic powder in a small bowl. Set aside.
Pour vegetable 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 the ham to edges of skillet.
Stir the sauce mixture and pour into the center of the skillet. Cook and stir until thickened.
Return vegetables to the skillet and stir until heated through.
Sprinkle with sesame seeds.