Dry-pot Style Steamed Chicken

One free-range chicken (approximately 1500g or less) 2-3 onions 3 scallions (white part only) 1.5 tbsp minced ginger 3 tbsp chopped scallion greens 1 small hot chili pepper 2.5 tbsp oil 1/2 tsp fish sauce 1/2 tsp white pepper powder 1/4 tsp sugar 1/2 tsp sesame oil 1 tbsp steamed fish soy sauce