Cut chicken breast into small bite-sized pieces. Make sure pieces are even in size. This helps them cook evenly. Pat them dry with paper towels. This step helps the coating stick better later.

In a bowl, mix buttermilk, egg, salt, and half of the spices. Add chicken pieces into the mixture. Stir well. Let it rest for at least 15 minutes. This makes chicken soft and flavorful.

In another bowl, mix flour, cornflour, paprika, chili powder, garlic powder and black pepper. This dry mix will create a crispy coating. Make sure spices are evenly combined for consistent flavor.

Take marinated chicken pieces and coat them in the flour mixture. Press lightly so coating sticks well. Shake off extra flour. Repeat until all pieces are well coated and ready for frying.

Heat oil in a deep pan. Fry chicken pieces in batches. Cook until golden brown and crispy. This takes about 5 to 7 minutes per batch. Remove and place on paper towels.

In a small bowl, mix hot sauce and melted butter. Toss fried chicken bites in the sauce. Make sure every piece is coated evenly. Serve immediately for best taste and crispiness.