Start by bringing a large pot of salted water to a boil. Add the macaroni pasta and cook according to package instructions until al dente, usually about 7-8 minutes. Drain and set aside.
While the pasta cooks, heat olive oil in a skillet over medium-high heat. Toss the diced steak with garlic powder, onion powder, salt, and pepper. Sear the steak in the hot oil for 3-4 minutes, stirring occasionally, until browned but still juicy. Remove from heat and set aside. In the same skillet, cook the turkey bacon until crispy, then crumble it into small pieces.
Dice your large baked potato into bite-sized chunks.
In a large mixing bowl, combine the cooked macaroni, diced baked potato, seared steak, crumbled turkey bacon, chopped green onions, shredded cheddar cheese, and sour cream. Mix gently until everything is well coated and evenly distributed.
Transfer the mixture into a greased baking dish. Bake in a preheated oven at 350°F (175°C) for 15-20 minutes until the cheese is melted, bubbly, and slightly golden on top.
Once baked, let the dish cool for a few minutes before serving. Garnish with extra green onions or a dollop of sour cream if desired.