HEAT oven to 350ºF
COOK roast in large skillet on medium-high heat 5 min. or until browned on all sides, turning occasionally; transfer to roasting pan. Top with bacon, overlapping slices as necessary to cover top of roast. Bake 1 hour or until roast is done (145ºF).
MEANWHILE, cut 1 pineapple wedge into 12 pieces; reserve for later use. Chop remaining pineapple; place in blender with remaining ingredients. Blend until smooth. Pour into saucepan. Bring to boil, stirring frequently. Simmer on low heat 20 min., stirring occasionally.
PLACE roast on cutting board. Tent with foil; let stand 5 min. Meanwhile, cook pineapple wedges in skillet on medium heat 5 min. or until evenly browned, turning frequently.
SLICE roast. Serve with pineapple wedges and mole sauce.