Cook rice according to package directions.
Cut off tops of peppers; remove seeds and membrane.
Precook pepper shells in boiling salted water 5 minutes; drain.
Sprinkle pepper cavities with salt.
Cook bacon till crisp; drain and crumble, reserving 2 tablespoons drippings in skillet.
Cook onion in reserved drippings till tender.
Combine remaining ingredients, rice, onion, and 3 tablespoons of the crumbled bacon.
Spoon mixture into peppers.
Sprinkle with remaining bacon.
Place peppers in shallow baking dish.
Bake at 350° for 25 minutes.