1. Begin by cutting the chicken thighs into bite-sized pieces. Alternatively, you can leave them whole if you prefer. This step ensures that the chicken cooks evenly and makes it easy to incorporate into the dish later on.

2. Place the prepared chicken and the mixed stir-fry vegetables into your slow cooker. This layered approach will allow the flavors to meld together beautifully as the dish cooks.

3. In a small bowl, whisk together the soy sauce, hoisin sauce, minced ginger, and sesame oil. Pour this flavorful sauce over the chicken and vegetables, ensuring everything is well coated.

4. Cover the crockpot and let the Crockpot Chicken Lo Mein cook on low for 4-5 hours or on high for 2-3 hours, until the chicken is tender and the vegetables are cooked through. Keep an eye on the dish and adjust the cooking time as needed, as slow cooker temperatures can vary.

5. During the last 15 minutes of cooking, stir in the cooked lo mein noodles. This ensures they are heated through and perfectly coated in the delectable sauce.