Let it simmer for 10 minutes or until the chicken is fully cooked. Add the pea eggplants. Add the seasonings; fish sauce and sugar. Taste for the balance flavors, salty with a hint of sweet. Add the slivers of red chili pepper and kaffir lime leaves. Let it boil one more time. When you are ready to serve, add the Thai basil. Stir to mix the basil in and immediately turn off the heat to keep the basil green. Quickly pour onto serving bowl.