Spritz the inside of a slow cooker with cooking spray.
Add the cubed cheese to the slow cooker first.
Drizzle with half & half.
Sprinkle the green chilies, jalapenos and seasonings on top.
Cover and cook on low for 2-3 hours or until the cheese has completely melted.
Stir well to combine adding additional half & half 1-2 Tbsp at a time until you reach the desired consistency.