Add cream cheese, sour cream, ranch seasoning, garlic powder, pepper jack cheese, 1 CUP cheddar cheese, half of the bacon and 2 tablespoons green onions to a large bowl and mix until well combined.
Drop mixture onto a large piece of plastic wrap, cover tightly, and shape into a ball. Chill in the refrigerator for 1-2 hours to firm up (up to 24 hours if serving the next day) before rolling in coating.
Meanwhile, add remaining 2 tablespoon cheddar cheese, bacon and green onions to a medium bowl. Refrigerate.
When ready to coat cheeseball, whisk in pecans until evenly combined.
Spread Coating in an even layer on cutting board/parchment lined counter. Remove cheese ball from refrigerator and roll in Coating mixture, pressing to adhere, until evenly coated. At this point you can refrigerate until ready to serve.
Serve with crackers, celery, carrots, etc.
