Cook the pasta according to the package directions, making sure to salt the water adequately.

Add the olive oil to a large skillet, and sauté the onion and veggies over medium heat, until the onions start to turn translucent.

Push the veggies to the perimeter of the skillet, and add the ground meat to the center. Sprinkle meat with garlic powder and oregano, and add salt and pepper to taste. Cook and crumble until cooked through, then mix the veggies and meat together.

Add the entire jar of pasta sauce to the mixture, and turn the burner up to high. When the sauce starts bubbling, turn the heat down to low and simmer until the pasta is finished cooking.