Spray 5-quart slow cooker with cooking spray. Place pork in slow cooker; sprinkle taco seasoning mix over top. Toss to coat. Add remaining Chili ingredients to slow cooker; stir to combine. Cover; cook on Low heat setting 8 to 9 hours or until pork is tender and easily pulled apart.
Transfer pork to cutting board and shred, using two forks. Add shredded pork back into slow cooker; stir to combine, and continue to cook about 15 minutes or until hot. Serve with toppings.