Cut the chicken breast into bite-sized cubes and season with garlic powder, ginger powder, sea salt, and black pepper.
In a small bowl, whisk together the coconut aminos, rice vinegar, tomato paste, and honey until smooth to create the sauce glaze.
Heat the avocado oil in a large skillet over medium-high heat until shimmering.
Add the chicken to the skillet and cook for 5-6 minutes until golden brown and cooked through, then remove from the pan and set aside.
In the same skillet, add the diced bell peppers and onions, sautéing for 3-4 minutes until they begin to soften and caramelize.
Stir in the pineapple chunks and the prepared sauce, letting it simmer for 2 minutes until the liquid has thickened and turned glossy.
Return the chicken to the skillet, tossing well to coat every piece thoroughly in the vibrant sweet and sour sauce.
Serve the chicken and vegetable mixture immediately over the warm jasmine rice.