Cut the chicken breast into bite-size. Set aside.
In a bowl, combine all the dry ingredients.
Add ¼ cup of the dry mixture and 2 tbsp water into the chicken breast.
Next, to start making popcorn chicken, put the chicken one by one in a dry mixture. Make sure the chicken is even spreadly coating. Do it in batches.
Heat the frying pan on medium heat.
Fry the popcorn chicken until golden brown. Don’t crowd the pan, fry the popcorn chicken in several batches.
Store on a cooling rack.
In a big bowl, combine gochujang paste, ketchup, and sesame oil.
Stir the popcorn chicken into the gochujang sauce until evenly spread.
Before serving, sprinkle the korean popcorn chicken with sesame seeds.
Korean popcorn chicken is ready to serve. Enjoy!