Crispy Chicken with Black Pepper Sauce on Rice Recipe

2 boneless skinless whole chicken thigh fillet, lightly flatten with kitchen mallet
1/2 tbsp soy sauce
1 tsp white pepper
1 tsp sesame oil
1 tbsp corn flour, for dusting
1 tbsp rice flour, for dusting
Vegetable oil

(Black pepper sauce):
2 cloves garlic, chopped
1 thumb size ginger, chopped
2 bird eye chillies, sliced
2 red shallots, sliced
1 tbsp crushed black peppercorn
2 tbsp oyster sauce
1 tbsp soy sauce
1/2 tbsp sugar
1/2 cup chicken stock
6 snow peas, tailed and topped
1 tbsp cornflour, mix with 1/2 tbsp water