01 - Cook rice noodles according to package directions. Drain thoroughly, rinse under cold water, and set aside.
02 - Heat vegetable oil in a large pot over medium heat. Add grated ginger and minced garlic; sauté for 1 minute until fragrant.
03 - Stir in Thai red curry paste and cook for 1 minute to develop flavor.
04 - Add sliced chicken and cook, stirring constantly, until just opaque on the outside, about 2-3 minutes.
05 - Pour in coconut milk and chicken broth. Bring mixture to a gentle boil.
06 - Add fish sauce, soy sauce, and brown sugar. Reduce heat to low and simmer for 7-10 minutes until chicken is fully cooked.
07 - Add mushrooms, bell pepper, and carrot. Simmer for 3-4 minutes until vegetables are just tender-crisp.
08 - Stir in baby spinach and spring onions; cook until spinach wilts, about 1 minute.
09 - Add lime juice and taste. Adjust seasoning with fish sauce or sugar as needed.
10 - Divide cooked noodles among serving bowls. Ladle hot soup over noodles. Garnish with cilantro, lime wedges, and sliced red chili if desired.