1. Place first 7 ingredients in a large zip-top bag, stirring well. Add pork; seal bag. Refrigerate 1 hour, turning after 30 minutes.
2. Preheat grill to medium-high heat.
3. Remove pork from bag, and discard marinade. Thread pork evenly onto 4 (6-inch) skewers; sprinkle evenly with salt. Thread 4 mini bell peppers onto each of 4 (6-inch) skewers. Arrange skewers in a single layer on grill rack coated with cooking spray; grill 3 minutes on each side or until desired degree of doneness.
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