Preheat your oven to 425 fegrees Fahrenheit. Heat a large cast iron pan or any oven safe large skillet over medium-high heat. Season chicken breasts with 2 tsp salt, 2 tsp paprika, and 1 tsp garlic powder. Place chicken breasts in heated pan and sear for 3-4 minutes per side. Remove from pan and set aside. Add carrots, potatoes, and season with remainder 1 tsp of garlic powder, and 1 tsp salt. Cook stirring often for about 5 minuntes or until the potatoes and carrots are cooked about half way through. Remove and set aside.
Add chopped onion to skillet and cook for about 4-5 minutes while stirring. Sprinkle with tapioca flour and stir well. Add chicken broth and continue to cook for 2 minutes.
Add vegetables back to the skillet and then nestle the chicken pieces in the vegetables and broth. Add cast iron skillet to preheated oven and bake for 20 minutes.
Take out of oven, sprinkle with fresh chopped parsely and serve.