1. Preheat broiler. Place bell peppers on baking sheet, and broil 10 minutes, or until blackened on all sides, turning occasionally. Transfer to paper bag or bowl, close or cover with tight lid, and cool 5 minutes. Remove skin, core, and seeds, and coarsely chop. Set aside.
2. Process olives, parsley, oil, and vinegar in food processor until finely chopped. Transfer mixture to large bowl, and fold in chopped bell peppers. Season with salt and pepper, if desired.