In a large skillet, heat the olive oil over medium-high heat. Add the sliced steak and season with garlic powder, onion powder, salt, and pepper. Cook for about 3-4 minutes until browned, stirring occasionally.
Add the sliced onion and bell pepper to the skillet. Cook for an additional 5-7 minutes, or until the vegetables are tender and the steak is cooked through.
Reduce the heat to low and sprinkle the shredded provolone cheese over the steak and vegetables. Cover the skillet and let it sit for 2-3 minutes, or until the cheese is melted.
To assemble the bowls, divide the cooked brown rice among four bowls. Top each bowl with the cheesesteak mixture.
Garnish with chopped fresh parsley before serving.