Heat 1 tablespoon olive oil in a large pan to medium heat and add celery, onion and peppers. Cook about 5 minutes to soften..
Add garlic and cook 1 minute, stirring.
Remove from heat and add contents to a mixing bowl. Cool slightly.
To the mixing bowl, add the Cajun seasonings, parsley, chili flakes, egg, ground turkey and panko. Salt and pepper to your taste.
Hand mix the meat mixture until everything is combined, but do not over mix. If you over mix with your hands, the meatballs can become mealy.
Form the meat mixture into 1-inch turkey meatballs. You should get about 16 meatballs.
Preheat your oven to 400 degrees F.
Heat the pan again to medium heat and add remaining olive oil. Brown the meatballs 3-4 minutes, rolling them a bit to brown all of the sides.
Transfer the pan to the oven and bake the meatballs for 10 minutes, or until the turkey meatballs are cooked through.
While turkey meatballs are cooking, add the tomato sauce, sriracha, honey, garlic powder, chili flakes, and salt and pepper to a small pot. Heat gently, stirring, until it is well combined.
Pour the honey-sriracha sauce / glaze over the turkey meatballs, or you can brush it on.
Sprinkle with chili flakes and fresh parsley and serve.