Bake the Fries: Start by heating the oven to 425°F. Spread the frozen fries in a single layer on a large baking sheet. Drizzle olive oil over the top and toss well so everything gets lightly coated. Bake until golden and crisp, flipping halfway through so both sides brown evenly.
Mix the Seasoning: While the fries cook, combine paprika, garlic powder, onion powder, cayenne, black pepper, and salt in a small bowl. Stir until the blend looks even and smells bold.
Season the Fries: Once the fries come out hot and crispy, sprinkle the seasoning over them right away. Toss gently so every fry picks up flavor. The heat helps the spices cling better.
Add the Cheese: Scatter shredded cheddar evenly over the seasoned fries. Return the pan to the oven for a few minutes until the cheese melts fully and starts to bubble slightly.
Finish with Ranch: Remove the fries from the oven and drizzle ranch dressing across the top. Add green onions and any extra toppings you like. Serve right away while everything stays hot and gooey.
