Wash each potato under running water, using a vegetable scrubbing brush to remove any residual dirt on the skin. Cut each potato in half or quarter, depending on the size. Set aside.

In a small bowl, combine together brown sugar, salt, oregano, paprika and garlic powder. Rub mixture all over chicken, pressing gently so spices stick to skin.

Arrange potatoes and carrots in bottom of slow cooker insert. Place chicken on top of vegetables. Cover and cook on low for about 6 hours.