1Spray inside of 4- to 5-quart slow cooker with cooking spray. Place ham in slow cooker; sprinkle with pepper. Place mango, preserves, chili and vinegar in blender. Cover and blend on high speed 30 seconds; pour over ham.
2Cover and cook on Low heat setting 6 to 8 hours.
3Remove ham from cooker; place on serving platter. Sprinkle ham with 1 tablespoon of the cilantro. Stir remaining 3 tablespoons cilantro and the pineapple into sauce in cooker. Serve sauce with ham.