There are many things that you can stuff a bell pepper and make it wonderful! I have used left over Paella, Seafood Gumbo ( a little extra rice for thickening), Smorvis and a more traditional meat and rice combination.
Anyway, you make it and it’s wonderful. BTW, if there are left overs, I wrap them individually in plastic wrap, freeze them and the reconstitute easily in a microwave later on!
Oh yes, and they are relatively nice portion controlled item for those watching their waistlines!
Roger