1. Start by heating the oil in a large saucepan over medium heat.

2. Add the pork and cook until it starts to brown.

3. Add the bell peppers and walnuts and cook for a few minutes, stirring often.

4. Add the rice, coconut milk, lemongrass, water, salt, pepper, and herbs. Stir to combine.

5. Bring the mixture to a boil, reduce heat to low, cover and simmer for 20-25 minutes or until the rice is cooked.

6. Remove from heat and let sit for 5 minutes before serving.