Combine the chicken, pepper sauce, salt, and pepper and 1/2 teaspoon Essence in a large shallow nonreactive container. Toss to coat the chicken evenly. Cover with plastic wrap and refrigerate for at least 1 hour, or up to 3 hours.
Pour enough oil to come halfway up the sides of a large deep heavy pot or electric deep fryer and heat over high heat to 360?F.
Combine the flour and 2 tablespoons of the Essence in a large mixing bowl and stir to blend. In batches, add the chicken pieces and toss to coat evenly, then carefully add the chicken pieces to the hot oil and deep-fry, turning occasionally, until golden-brown, about 10 minutes. Using a slotted spoon, transfer to drain on paper towels.
Sprinkle the chicken with the remaining 1/2 teaspoon Essence. Serve immediately, with Blue Cheese Sauce.
Yield: 4 to 6 appetizer servings