Heat oil in a large pot over medium heat. Add the onion, garlic, and ginger. Sauté until the onion is translucent.
Add the chicken thighs and cook until lightly browned on all sides.
Pour in the chicken broth and add the rice. Stir well.
Season with fish sauce and black pepper. Bring to a boil, then reduce heat and let simmer for about 30 minutes, stirring occasionally.
Once the rice is tender and the chicken is cooked through, remove the chicken and shred the meat. Return the chicken to the pot.
Serve hot, garnished with green onions and fried garlic. Squeeze lemon juice on top before eating.
Notes
Adjust the consistency by adding more or less broth as desired. This dish is traditionally served with calamansi, but lemons can be used as a substitute.