Preheat oven to 400 degrees F. Lightly oil a baking dish with olive oil and set aside.
In a clean bowl, lightly beat the egg. Stir in the Panko, olive oil, 1/2 tsp Garam Masala, garlic powder and 1/2 tsp salt. Add the ground chicken or turkey and stir together until well combined. Form the mixture into meatballs - it will make 16-20 meatballs. Place the meatballs into the baking dish and bake for about 20 minutes, or until the internal temperature of the meatballs is 165 degrees F.
Meanwhile, stir together the crushed tomatoes with the sugar, chili garlic sauce, 1 1/2 tsp of Garam Masala, 1 tsp salt, and cinnamon. Add the butter. Heat the sauce in a sauce pan until it is simmering. Remove the sauce from the heat and stir in the sour cream. Pour the sauce over the meatballs.
Reduce the oven temperature to 250 degrees. Cover the baking dish with foil and heat the sauce and meatballs together for at least 20 minutes, or up to one hour.
Serve the meatballs over rice.