1Spray 3 1/2- to 4-quart slow cooker with cooking spray. Mix soup, sour cream and cheese in medium bowl. Gently stir in bell pepper strips.
2Arrange half of the potatoes in cooker. Top with half of the sour cream mixture; spread evenly. Top with remaining potatoes and sour cream mixture, spreading evenly. Do not stir.
3Cover and cook on low heat setting 5 to 6 hours. Sprinkle chives over potatoes before serving.