Start with a hot cooking pan, add some olive oil.
Add the garlic, onion and ginger. Sautee until semi brown.
Add the chicken, cook until brown.
Add the tomatoes. Cook for another 3-5 minutes.
Add the coconut milk. Bring to a boil.
Add the pepper and fish sauce.
Add the pineapple. Bring to a boil.
Transfer to a bowl.
Garnish with parsley and chili (optional)