Melt butter in a large non-stick skillet over medium heat. Add pork, green onion, carrot, and broccoli; cook and stir until pork is cooked through, 7 to 10 minutes. Transfer pork mixture to a bowl and return skillet to medium heat.

Stir egg into the skillet and scramble until completely set. Add pork mixture back into the skillet; stir in rice, peas, soy sauce, garlic powder, and ground ginger. Cook and stir until heated through, 7 to 10 minutes.