Preheat your oven to 425°F (220°C). Spread your frozen tater tots in a single layer on a baking sheet lined with parchment paper. Drizzle olive oil over the tater tots and toss gently to coat. Bake for about 25-30 minutes, flipping halfway through.

While the tater tots are baking, prepare the creamy Alfredo sauce. In a medium saucepan over low heat, combine the Alfredo sauce with shredded cooked chicken breast. Stir in garlic powder and simmer for about 5-7 minutes.

Once the tater tots are ready, transfer them to a large mixing bowl. Pour the warm chicken Alfredo sauce over the tater tots and gently fold to coat evenly.

Preheat your broiler to high. Transfer the tater tots and Alfredo mixture to a baking dish. Sprinkle freshly grated Parmesan cheese and mozzarella cheese over the top. Place under the broiler for 2-3 minutes until cheese is melted and bubbly.

Remove from the oven and sprinkle freshly chopped parsley over the top for garnish. Serve immediately.