In a food processor, blend the processed paste until smooth.
Add oil to a large pot. Add the paste and lemongrass until fragrant, about 1 minute.
Add chicken and the rest of the ingredients. Bring to a boil and then lower the heat. Let it simmer until the chicken pieces are cooked through and the meat is tender. Remove from heat and set aside.
Place chicken in an air fryer. Cook for 10 minutes at 350F, flip, and cook for another 5-8 minutes at 350F.