Begin by setting your air fryer to 400 degrees Fahrenheit (200 degrees Celsius) to preheat.
In a large mixing bowl, combine frozen French fries.
In a separate small bowl, blend olive oil with dry ranch seasoning until well mixed. Drizzle this flavorful oil over the fries and toss them until evenly coated. Add crispy bacon bits and a pinch of salt, tossing once more to mix thoroughly.
Transfer the seasoned fries into the air fryer basket. Cook for 7 minutes, then give the basket a good shake and continue cooking for an additional 5 minutes.
Once the fries are golden and crispy, sprinkle a generous amount of shredded cheese on top. Let it cook for another 2 minutes to melt the cheese.
Carefully use a spatula to move the cheesy fries to a serving dish and enjoy them while they're hot.