Slice scrubbed potatoes thin. Soak in ice water for about 10 minutes. Drain and dry well.
Heat oil to 350℉ - 375℉.
While oil is heating, pour 1 cup alfredo sauce in a saucepan. Heat to boiling then reduce to a simmer. Add 6-ounces blue cheese crumbles and 1/4 cup Ranch dressing. Stir to combine. Remove from heat and allow to rest.
In another saucepan combine vinegar and water. Bring to a boil. Reduce heat to a simmer annd stir occasionally. Make a slurry by adding 1 teaspoon water to the cornstarch. Add to the balsamic mixture and stir. (You need this to be thick enough to coat the back of a spoon. If 1 tablespoon cornstarch isn't enough, make up a little more.). Set aside.
Fry potatoes to desired crispness. Drain well on paper-towel lined pans. Salt to taste.
Place chips on a serving plate. Drizzle chips with blue cheese sauce, then drizzle with some balsamic glaze. Sprinkle with bacon, blue cheese crumbles and green onions. Serve while chips are still warm.
