Set skins aside. Add orange juice, butter, and crushed pineapple to the bowl. Beat with electric mixer until fluffy. Add more orange juice if needed. Add salt and pepper to taste.
Stuff shells with sweet potato mixture and sprinkle with pecans if desired.
Refrigerate if not serving immediately. When ready to serve, warm in preheated oven for 10 minutes. 2 Protein, gm. 46 Cholesterol, mg.