Step 1: Prep and Season the Chicken - Pat the chicken thighs dry with a paper towel. This helps them sear properly and develop a nice crust. Season them evenly with salt, black pepper, smoked paprika, and garlic powder.
Step 2: Heat the Pan - Heat the oil in a skillet over medium high heat. Give it a minute to get hot so the chicken sizzles when it hits the pan.
Step 3: Sear for Flavor - Place the chicken thighs skin side down in the skillet. Let them cook undisturbed for about 3 to 4 minutes until the skin is golden and crisp. This step builds a lot of flavor, so do not rush it.
Step 4: Transfer to Slow Cooker - Transfer the seared chicken thighs to the slow cooker, arranging them in a single layer if possible.
Step 5: Make the Peach BBQ Sauce - In a mixing bowl, whisk together the peach preserves, barbecue sauce, brown sugar, Worcestershire sauce, and onion powder until smooth and well combined.
Step 6: Combine and Coat - Pour the sauce evenly over the chicken thighs, making sure each piece gets coated.
Step 7: Slow Cook to Perfection - Cover and cook on low for 5 to 6 hours. The chicken will become very tender and soak up all that rich sauce as it cooks.
Step 8: Finish and Serve - Before serving, spoon the thickened sauce over the chicken to coat it well. Add peach slices and a sprinkle of parsley if you like a fresh finishing touch.