Spray your slow cooker with non-stick spray.
Place half of the tater tots in an even layer in the bottom of your slow cooker.
Add the cubed chicken in a layer over the tots.
Sprinkle over half of the bacon.
In a large bowl, whisk together the cream of chicken soup, milk, salt, pepper, onion powder, garlic powder and diced onion.
Pour this mixture over everything in the slow cooker.
Add the rest of the tater tots to the top.
Sprinkle over the cheese.
Place the lid on the slow cooker and cook on low for 5 hours.
When it is done cooking add the rest of the bacon and sprinkle over the green onion if desired.
ENJOY!