Trim the chicken by removing excess fat and tail gland if your choice of chicken cut is leg quarter.
Wash the chicken in running water and remove impurities such as small feathers or debris if any. Put on the colander to drain.
Make a shallow cut on the chicken in order for the chicken to absorb the marinade.
Put in the blender the following ingredients: calamansi juice, brown sugar, vinegar, black pepper, lemon grass, garlic, ginger and soy sauce.
Turn on the blender at the lowest speed and blend the ingredients. Blend the ingredients for 1 minute.
Put the chicken in a zip lock bag or any food grade plastic bag and pour the marinade in it. You may strain the aromatics with a sieve before putting it in the bag.
Marinate the chicken overnight or at least 8 hours in a refrigerator.
Then drain the chicken and put in an air fryer. Set the timer to 30 minutes at 180 degrees Celcius.
During the first 15 minutes, open the air fryer and brush the chicken with achuete oil. Then put the chicken back and continue cooking until the 30 minute timer setting is up.
Turn over all the chicken then brush again with achuete oil and cook for another 15 minutes.
To serve the chicken inasal, put in a serving plate and serve with fried rice. Serve with condiments also such as red chili pepper, calamansi and soy sauce.