Blend pineapple juice, brown sugar, garlic, green onions, salt, pepper, annatto powder into a blender until liquified.
Chicken
Combine Marinade and Chicken into a gallon Ziploc bag
Refrigerate for 2 days.
Cooking
Pre-heat the pan on a medium/high heat.
Coat bottom of pan with oil
Place chicken "skin" side down. Cook for 3-5 minutes. Flip and cook for 3-5 minutes. Cook until the internal temp of thickest part of the chicken is 165°F.
Notes
Be sure temperature is no higher than medium/high. Watch for sugar caramelization it is a good indication to flip (3-5 minutes) and be sure to not burn. Excessive flipping will cause the red annatto color to fade. Be sure the internal temp of thickest part of the chicken is 165°F before serving.