Follow the steps in order for the best result.
Begin by preheating your oven to 475 degrees Fahrenheit. Evenly distribute the ranch-flavored tortilla chips on a rimmed baking sheet or arrange them in a shallow oven-safe dish.
In a saucepan, combine the buffalo wing sauce and water. Bring this mixture to a gentle simmer over medium heat. Introduce the shredded cooked chicken into the simmering sauce, ensuring it is thoroughly heated.
Carefully strain the chicken from the sauce, making sure to reserve the flavorful wing sauce for later. Spread the sauced chicken evenly over the bed of ranch-flavored tortilla chips. Generously sprinkle the shredded cheddar cheese over the chicken-covered chips.
Place the baking sheet or dish in the upper third of the preheated oven. Bake until the cheddar cheese is fully melted and bubbly, approximately 5-7 minutes. Keep a close watch to prevent burning.
Once the nachos are baked to golden perfection, remove them from the oven. Garnish with crumbled blue cheese and freshly chopped celery. Drizzle the reserved wing sauce over the top to add an extra layer of flavor and moisture.
Serve immediately and enjoy these loaded Buffalo Chicken Nachos while they're hot and delicious!