Preheat the oven to 425F convection. Cook rice or noodles, if you haven't already.
Add the cod to a 9x13-inch baking dish. Season all over with salt (about ½ teaspoon). Scatter the bell peppers around the cod.
In a high-speed blender, add the coconut milk, kale, curry paste, soy sauce, maple syrup and salt. Blend on high until smooth and bright green.
Pour the mixture over the cod/peppers. Bake for 15-20 minutes or until the sauce has reduced. If you have pieces of fish that are very thin, check it after 10 minutes to see if it’s cooked through/flakes easily. You can remove any cooked fillets and continue to cook the rest/reduce the sauce.
Serve the cod over warm rice and slather with the green curry sauce. Top with herbs (if using), veg (if using), and a very generous squeeze of lime.