In a medium bowl, add cream cheese and sour cream and stir to combine. Stir in cheddar cheese, diced green chilies, olives, green onions, garlic powder, and seasoned salt.
Working with one tortilla at a time, spread about ½ cup of the cream cheese mixture evenly over the tortilla, going all the way to the edge. Roll the tortilla tightly and wrap in plastic.
Continue with the remaining tortillas until all have been assembled and wrapped in plastic. Refrigerate for at least 2 hours or overnight. To serve, trim any unfilled ends away. Slice each tortilla into 8 equal pieces.
