Cut chicken breasts in half lengthwise and then cut into bite sized chunks. Season very lightly with a pinch of salt.
Cut serrano peppers on the bias into large chunks. Pound the bird chilies with the heel of knife to bruise the peppers and slightly break open.
In a wide pot, bring coconut cream to a simmer and add the curry paste.
Stir the paste into the coconut cream and simmer for 30 seconds over medium high heat.
Add chicken breast to pot.
Simmer chicken for 2 minutes over medium high heat, stirring to prevent bottom of pot from scorching.
Add the eggplant and continue to simmer over medium high heat for another 2 minutes. Continue stirring.
Roughly tear the makrut lime leaves into the pot and simmer 1 more minutes
Add fish sauce and palm sugar to the pot. Simmer 30 seconds.
Add the chicken stock to the pot, and simmer over high or medium-high heat for 10 minutes. Curry should start to thicken back up. Keep stirring to prevent scorching.
Add peppers to the pot and continue to cook the curry until it has become thick and coats everything nicely, about 2 more minutes.
Add Thai basil and give a quick stir. Curry is now ready. Adjust seasoning with more fish sauce if necessary.
Serve curry with warm rice