In a large bowl, combine ground chicken, panko, egg, 1 tablespoon red curry paste, minced garlic, grated ginger, green onions, cilantro, and 1 teaspoon fish sauce.
Form the mixture into approximately 16 evenly sized meatballs.
Heat coconut oil in a large skillet over medium-high heat.
Sear meatballs in the skillet for 3-4 minutes per side until browned, then remove and set aside.
In the same skillet, add the remaining 1 tablespoon red curry paste and bell peppers, sautéing for 2 minutes.
Stir in coconut milk, brown sugar, and remaining fish sauce, scraping up any browned bits from the pan.
Return meatballs to the skillet and simmer for 8-10 minutes until meatballs are cooked through and the sauce has thickened.
Stir in spinach and lime juice just before serving until spinach is wilted.
Serve warm, optionally over jasmine rice or rice noodles.