Combine all ingredients for the pineapple sweet & sour sauce in a small saucepan. Bring to a boil over medium heat. Once boiling, reduce heat to low then simmer (with lid off) until the sauce has reduced in half and thickened, about 20-25 minutes.
While the sauce and rice are cooking, sauté your veggies: Heat the one tablespoon of coconut oil in a large skillet over medium heat. Once the oil has melted, add the minced garlic, diced bell pepper, diced onions, and halved cherry tomatoes plus a healthy pinch of salt and pepper. Toss to coat the veggies in oil and spices then sauté until soft, about 8 minutes, stirring occasionally. Once veggies are cooked, remove them from the pan and set aside in a separate bowl.