Step 1: Season the Chicken - Pat the chicken thighs dry with paper towels. This helps them brown properly during the searing step. Season both sides of the chicken with salt, black pepper, smoked paprika, and garlic powder. Make sure the seasoning is evenly distributed so every bite has flavor.
Step 2: Sear the Chicken - Heat the oil in a large skillet over medium high heat. Place the chicken thighs skin side down in the hot skillet. Let them cook without moving for several minutes until the skin becomes golden and slightly crisp. This step builds flavor and prevents the skin from tasting rubbery later.
Step 3: Transfer to the Slow Cooker - Once the chicken is nicely seared, transfer the thighs to the slow cooker. Arrange them skin side up in a single layer so the sauce can cook evenly around them.
Step 4: Make the Carolina Gold Sauce - In a mixing bowl combine the yellow mustard, honey, brown sugar, apple cider vinegar, and Worcestershire sauce. Whisk everything together until the mixture becomes smooth and fully blended. The sauce should look glossy and thick with a rich golden color.
Step 5: Add the Sauce - Pour the sauce around the chicken thighs rather than directly on top of the skin. This helps preserve some of the texture created during the searing step.
Step 6: Slow Cook - Cover the slow cooker and cook on low for 5 to 6 hours. During this time the chicken becomes tender and the sauce slowly thickens while absorbing all the savory chicken flavor.
Step 7: Finish and Thicken - Remove the lid during the last 30 minutes of cooking. Allowing the slow cooker to remain uncovered helps the sauce reduce slightly and develop a richer texture. Once the sauce has thickened and the chicken is fully tender, it is ready to serve.