Slow Cooker Lemon Pepper Chicken

INGREDIENTS

• 1 (2 to 3 pound) whole chicken, giblets removed
• 1/4 cup butter, softened
• 1 teaspoon lemon pepper
• 1 (1-inch thick) slice of lemon
• 2 cloves garlic, lightly crushed, or more to taste
• 2 tablespoons extra-virgin olive oil
• 2 teaspoons seasoned salt
• 1 teaspoon dried thyme
• cracked black pepper to taste (optional)