Heat 1 cup of coconut milk in a wok or pan you are using to make the dish. Stir it constantly, until it separates which should be about 3-5 mins. If it doesn't separate, you can add the optional oil. Now add the Panang curry paste and stir continuously for about 2-3 mins.
Add chicken, and stir until the meat is opaque on both sides. Then add the remaining coconut milk and bring it to a boil. Add palm sugar, it will melt on its own, you don't have to break it. Stir in the fish sauce to taste and simmer until the chicken is cooked.
Roll 4 kaffir lime leaves and cut it into thin shreds. Add it to the curry along with bamboo shoots and bell peppers. Stir for another couple of minutes. Now add basil leaves at this time. Stir to combine for a minute and your Chicken Panang Curry is ready to be served.
You can garnish it with basil, along with a couple of tablespoons of coconut milk. Serve hot with steamed jasmine rice.