In a mixing bowl, combine ground pork, minced garlic, grated ginger, cilantro, fish sauce, lime juice, chili paste, sugar, and salt. Mix well until fully combined.
Form the mixture into 1-inch meatballs and set aside.
Heat a large pot over medium heat and add the chicken broth, coconut milk, and red curry paste. Stir to combine and bring to a simmer.
In a skillet over medium heat, add the meatballs and cook until browned on all sides (about 5 minutes). Transfer them into the pot with the broth.
Add the rice noodles, bok choy, and bell pepper to the pot. Cook for an additional 10-12 minutes, until the noodles are tender and the meatballs are cooked through.
Stir in the lime juice and taste for seasoning, adding more salt or lime juice if desired.
Serve the soup hot, garnished with fresh cilantro leaves and sliced red chili if you want extra heat.