Prepare the pineapple bowl: Slice a pineapple in half and hollow out the flesh to create a bowl. Chop the removed pineapple into small chunks.
Make the teriyaki sauce: In a bowl, whisk together coconut aminos, golden monk fruit, pineapple juice, minced garlic, ginger, sesame oil, and almond flour mixed with water until smooth.
Cook the chicken: Heat avocado oil in a skillet over medium heat. Add diced chicken thighs and cook until golden brown.
Add sauce: Pour the prepared teriyaki sauce over the chicken and simmer until thickened. Stir in extra pineapple chunks for sweetness.
Assemble the bowl: Fill the pineapple halves with cooked brown rice and top with the teriyaki chicken.
Garnish and serve: Sprinkle sesame seeds, chopped green onions, and additional pineapple chunks before serving.