Cut a wedge out of each potato about 1/8-inch wide and 1-inch deep and place in a microwave-safe dish. Microwave on HIGH, uncovered, for 10 to12 minutes depending on strength of microwave. Use oven mitts to remove dish from microwave.
Carefully make a slit in the top of each potato and fluff with a fork. Stir 1 Tablespoon yogurt, 1 teaspoon buttery spread and 1/8 teaspoon salt into each potato; sprinkle with chives if desired. Place 16 slices turkey pepperoni on a plate and microwave on HIGH for 45 to 60 seconds to crisp.
Top each seasoned potato with pasta sauce, cheese, green pepper and green onion. Microwave on HIGH for 2 minutes to melt cheese, then, top with coarsely crumbled pepperoni slices.