I often use up one of the tenderloins in a package and have the other half to use up. This is a great way to use it up. Plus those bags of mini bell peppers are often on sale where I live! The one hour marinating time is included in the prep time.
Place the first 7 ingredients in a large zip-top bag, stirring well. Add pork; seal bag. Refrigerate for 1 hour, turning after 30 minutes.
Preheat grill to medium-high heat, or prepare charcoal to medium-high heat.
Remove pork from the bag and discard marinade. Thread the pork evenly onto 4 6-inch skewers; sprinkle evenly with salt. Thread 4 mini bell peppers onto 4 6-inch skewers. Arrange the skewers in a single layer on a grill rack coated with cooking spray; grill 3 minutes on each side or until desired degree of doneness.