Begin by cutting your pasture-raised chicken breast into 1-inch cubes. Season it lightly with sea salt. In a mixing bowl, combine the chicken with 3 tablespoons of tapioca starch, making sure each piece is well-coated.
In another bowl, whisk together the pineapple juice, white vinegar, tomato paste, minced ginger, onion powder, garlic powder, and 1 teaspoon of tapioca starch until smooth.
Heat 2 tablespoons of avocado oil in a large skillet or wok over medium-high heat. Add the coated chicken pieces and cook for about 5-7 minutes until golden brown and cooked through.
In the same skillet, add the chopped red pepper and sauté for about 2-3 minutes until softened. Add the drained pineapple tidbits and stir for another minute.
Pour the prepared sauce over the vegetables in the skillet, stirring to combine. Bring to a simmer, then add the cooked chicken, tossing to coat. Cook for an additional 2-3 minutes to heat through.
Serve your Paleo Gluten-Free Healthy Sweet-and-Sour Chicken over a bed of hot cauliflower rice. Garnish with chopped green onion and a sprinkle of sesame seeds.