Add all the Ingredients for the barbecue sauce in a large bowl. Stir to combine.
Place the raw chicken breast at the bottom of the slow cooker (or instant pot with slow cooker setting) and cover thoroughly with your homemade bbq sauce. Cook on medium heat for 3 hours or until the chicken can be shredded with a fork. Use a meat thermometer to make sure the internal temperature of the chicken is 165F minimum.
(While waiting on the chicken, fry up the bacon and let it cool. Once cool, break into small crumbed pieces and set aside. )
Shred the chicken. Add yogurt, 1 cup of shredded cheese, spinach, and bacon bits. Stir to combine. (If using the instant pot, keep the heat on or turn to saute mode for 2 minutes after stirring while the spinach wilts)
( While the chicken is cooking, preheat the oven to 425F. Toss the cauliflower florets with oil and some garlic and onion powder, pepper, and salt. In a casserole dish. Roast cauliflower for 15-20 minutes. Remove from heat.)
Change oven temp to 350. Scoop the shredded chicken mixture on top of the cauliflower and add the remaining cheese to the top. Bake at 350 for 20 min or until cheese is lightly golden brown. Remove from heat and garnish with chives and your choice of toppings. Enjoy!