In a large mixing bowl, combine the shredded chicken, softened cream cheese, shredded cheddar cheese, ranch dressing, garlic powder, onion powder, smoked paprika, and black pepper. Mix until everything is well combined and creamy.
Take a tortilla and place about 0.125 cups of the chicken filling along one edge of the tortilla. Roll the tortilla tightly around the filling, tucking in the sides to secure the contents. Repeat with the remaining tortillas and filling.
In a large skillet or frying pan, heat about 1 inch of cooking oil over medium heat. The oil should be hot enough that a drop of water sizzles when it hits the surface.
Carefully place a few taquitos in the hot oil, seam side down, and fry for about 2-3 minutes on each side or until they are golden brown and crispy. Avoid overcrowding the pan. Use tongs to remove the taquitos from the oil and place them on a plate lined with paper towels to drain any excess oil.
Arrange the cheesy chicken and ranch taquitos on a plate. You can serve them with shredded lettuce and salsa for extra freshness and flavor. Enjoy warm!