In a bowl, mix together cream cheese, sour cream, horseradish, cheddar, scallions and bacon.
Form the cheese mixture into a ball and wrap in plastic wrap to chill for at least 1 hour.
In a small bowl, mix together the onion, poppy seeds, sesame seeds, garlic flakes, salt and pepper.
Once cheeseball is set, roll the cheese ball in the everything bagel seasoning mix and plate with some bagel chips alongside.