In a medium bowl, coat the chicken with marinade ingredients. Cover and refrigerate for at least 2 hours
Add oil into a pot or wok for frying over medium-high heat
Stir cornstarch and egg into the chicken mixture. Add the brown rice flour to a flat plate
When the oil is heated, add the chicken to the flour, toss to coat evenly, and then place into the hot oil. Let chicken fry on both sides until medium brown (3-4 minutes). When done, place chicken on a plate lined with a paper towel to drain excess oil
Add fresh basil leaves and fry for a few seconds. Sprinkle basil on top of chicken and toss/coat with the remaining five-spice powder. Serve immediately while the chicken is still crispy