Preheat oven to 400°. Place sweet potatoes in a large bowl. In a small bowl, mix oil and seasonings; drizzle over potatoes and toss to coat., Arrange half the sweet potatoes in a single layer in 2 ungreased 15x10x1-in. baking pans. Bake 25-30 minutes or until golden brown, turning once. Repeat with remaining sweet potatoes., In a small bowl, beat dip ingredients until blended. Serve with chips.