01 - Whip the softened cream cheese and sour cream in a medium bowl until completely smooth and lump-free, about 2 minutes.
02 - Fold in the shredded cheddar, diced red bell pepper, green onions, black olives, garlic powder, salt, and pepper until evenly distributed throughout the mixture.
03 - Place a tortilla on a flat surface and spread one-quarter of the filling evenly across the entire surface, extending to the edges for uniform rolling.
04 - Roll the tortilla tightly from one end to the other, applying gentle pressure to create a compact cylinder. Wrap securely in plastic wrap. Repeat with remaining tortillas.
05 - Refrigerate the wrapped rolls for at least 1 hour or up to overnight. Chilling firms the filling, ensuring clean, uniform slices.
06 - Unwrap the chilled rolls and cut each into 6 equal pinwheels using a sharp knife. Arrange on a serving platter and serve immediately, or keep refrigerated until ready to serve.