Place ginger, garlic, curry paste, and 1 cup of the stock in a small food processor and process until smooth. Add to slow cooker with remaining stock and chicken.
Cook on low 6 to 8 hours.
30 minutes before serving, remove the chicken and add the noodles and coconut milk. Shred the chicken and add back to the soup.
Divide the chicken and noodles between four bowls and ladle the soup over the top. Garnish with basil and cilantro.
Notes
Add the coconut milk about 30 minutes before serving so that it doesn't curdle.
Add the rice noodles 30 minutes before serving, they will cook in the broth and become extra flavorful.
You can decrease the curry paste to a tablespoon if you don't want all the heat.
If you don't have fresh basil, you can just use fresh cilantro.
You can use boneless or bone chicken thighs or breasts.