01 - Cook the rice noodles according to package directions. Drain, rinse under cold water, and set aside.
02 - Heat vegetable oil in a large pot over medium heat. Add garlic and ginger; sauté for 1 minute until fragrant.
03 - Add red curry paste and cook for 2 minutes, stirring to release aromas.
04 - Stir in sliced chicken and cook for 2 to 3 minutes until lightly browned but not fully cooked.
05 - Pour in coconut milk and chicken stock, stirring thoroughly and scraping the pot bottom.
06 - Add fish sauce and brown sugar, then bring the mixture to a gentle simmer.
07 - Add bell pepper, snow peas, shiitake mushrooms, and spring onions. Simmer 5 to 7 minutes until chicken is cooked through and vegetables are tender-crisp.
08 - Add cooked noodles and lime juice to the pot. Stir well to heat everything through.
09 - Taste and adjust with additional fish sauce or lime juice if desired.
10 - Ladle soup into bowls and garnish with cilantro, extra spring onions, lime wedges, and optional chili slices.