Preheat oven to 425°F (220°C) and prepare French fries according to package instructions until golden and crispy.
While fries are baking, brown the ground beef in a skillet over medium-high heat until no longer pink, approximately 7-9 minutes.
Drain excess fat from the skillet and season the beef with salt, black pepper, and garlic powder.
Remove fries from the oven and arrange them closely together in a single layer on the baking sheet or in a cast-iron skillet.
Distribute the seasoned ground beef evenly over the hot fries.
Sprinkle the shredded cheddar cheese over the beef and fries.
Return the tray to the oven for 3-5 minutes, or until the shredded cheese is fully melted and bubbling.
Drizzle the warm nacho cheese sauce over the top.
Garnish with crumbled bacon, green onions, jalapeños, and dollops of sour cream before serving immediately.