In a medium-sized mixing bowl, combine the softened cream cheese and sour cream, stirring until smooth and well blended. Fold in the shredded cheddar cheese, ensuring it is evenly distributed throughout the mixture. Add the diced green chiles, chopped black olives, and sliced green onions, then sprinkle in the garlic powder and seasoned salt. Stir everything together until the ingredients are fully incorporated.
Lay out one tortilla on a clean, flat surface. Spread approximately ½ cup of the prepared filling evenly across the entire surface, making sure to reach the edges for consistent flavor in every bite. Carefully roll the tortilla into a tight log, applying gentle pressure as you go. Wrap the rolled tortilla in plastic wrap to maintain its shape and freshness.
Repeat the process with the remaining tortillas until all are filled, rolled, and wrapped. Transfer them to the refrigerator and allow them to chill for at least 2 hours or overnight—this step helps the flavors meld and makes slicing easier.
When ready to serve, remove the tortillas from the refrigerator and unwrap them. Trim off any unfilled ends for a clean presentation. Using a sharp knife, slice each roll into 8 equal pieces. Arrange the bite-sized pinwheels on a platter and enjoy!