Prepare the Ingredients: Start by cubing the chicken breast into bite-sized pieces and set aside. Dice the red and green bell peppers into small, even pieces, and dice the red onion.
Make the Marinade: In a small bowl, whisk together the soy sauce, Splenda, paprika, salt, black pepper, and 1/2 cup of pineapple juice (save the other half for later).
Marinate the Chicken: Place the cubed chicken into the bowl with the marinade, making sure each piece is fully coated. Let it sit for about 10 minutes to allow the flavors to infuse.
Set Up the Crock Pot: Add the marinated chicken (along with the marinade) into the crock pot. Then, layer the diced bell peppers (both red and green) and diced red onion over the chicken. Add the slightly smashed piece of ginger and crushed garlic cloves.
Add Remaining Pineapple Juice: Pour the remaining 1/2 cup of pineapple juice into the crock pot to enhance the flavor as it cooks.
Season and Cook: Sprinkle salt and pepper over the mixture in the crock pot. Drizzle with oil for added richness. Stir gently to combine.
Cook on High: Cover the crock pot and set it to cook on high for 4 hours.
Check and Serve: Once done, check to ensure the chicken is tender and fully cooked. If you’d like a thicker sauce, cook uncovered for an additional 15 minutes to reduce it.
Serve: Serve hot, optionally garnished with fresh cilantro or green onions.