In a small saucepan set over medium-low heat, combine the hot sauce and butter. Cook, whisking occasionally, until the sauce is smooth then set it aside.
Slice the chicken breasts into 2-inch strips.
In a medium shallow bowl, whisk together the eggs and milk.
In a separate medium bowl, whisk together the flour, garlic powder, onion powder and paprika with 1/2 teaspoon kosher salt and 1/4 teaspoon black pepper.
One at a time, dip each chicken piece in the egg mixture then shake off any excess and dress it in the flour mixture. Repeat the dipping process once more time so each piece of chicken is double-coated.
Line a baking sheet with paper towels.
Add at least 3 inches of oil to a large heavy-bottomed stock pot set over medium-high heat. Attach the deep-fry thermometer.
Once the oil reaches 360°F, add a portion of the coated chicken pieces to the pot and cook, flipping occasionally, until golden brown and cooked through, about 2 minutes. (The chicken must reach 165°F.)
Using a slotted spoon, transfer the chicken pieces to the paper towel-lined baking sheet. Repeat the frying process with the remaining pieces of chicken, returning the oil to 360°F between each batch.
Transfer all of the chicken pieces to a large bowl. Add the prepared Buffalo sauce and toss to combine. Serve immediately.