In a medium mixing bowl, add the sour cream and softened cream cheese. Beat with an electric mixer until smooth and creamy with no lumps.
Using a rubber spatula, gently fold in the green chilies, chopped black olives, shredded cheddar cheese, garlic powder, and seasoned salt. Mix until all ingredients are evenly combined.
Lay the flour tortillas flat on a clean surface. Using an offset spatula or the back of a spoon, spread an even layer of the filling over each tortilla, covering it edge to edge.
Starting from one end, roll each tortilla up tightly into a log.
Wrap each rolled tortilla individually in plastic wrap to help it hold its shape.
Refrigerate for at least 2 hours, or up to overnight, to allow the filling to firm up.
Once chilled, remove the plastic wrap and slice each roll into 1-inch pinwheels.
Arrange on a serving platter and serve with salsa in individual ramekins, if desired.
Enjoy!