Heat 2-3" of oil in a deep-fryer or Dutch oven. While it's warming up, make the sauce.
In a medium sauce pan over medium-high heat, add the Kentuckyaki sauce, pineapple juice, brown sugar and hot sauce. Stir.
In a small glass or bowl, mix the corn starch and water together. I like to use a fork for this. Make sure you get them well-combined.
Let the sauce come to a boil. Whisk in the cornstarch mixture. Continue whisking while the sauce thickens, another 2 minutes.
Remove from heat and let sit while you make the wings. Note: If the sauce gets too thick as it sets, whisk in a teaspoon or two of warm water to thin it.
For the wings
Place the flour in a large bowl. Stir in the salt and pepper.
Working in batches if needed, add the wings to the flour and coat well. Turn them several times, making sure you get the wings covered in flour.
Shake off any excess flour and add to the hot oil. Deep fry 7-10 minutes or until the wings hit 165 F. Remove to a paper towel-lined plate or wire rack over a baking sheet to drain.
Transfer wings to a large bowl. Drizzle with the sauce. Using a spatula, turn the wings to coat well.