01 - Beat the cream cheese and sour cream together in a medium bowl until completely smooth and well incorporated.
02 - Stir in the cheddar cheese, red bell pepper, green onions, black olives if using, garlic powder, salt, and black pepper until evenly distributed throughout the mixture.
03 - Place a tortilla flat on a clean work surface. Spread one-quarter of the filling evenly across the entire surface, extending to the edges for uniform coverage.
04 - Roll the tortilla tightly from one end to the other, applying gentle pressure to create a compact cylinder. Repeat with remaining tortillas and filling.
05 - Wrap each rolled tortilla securely in plastic wrap and refrigerate for at least 1 hour to firm up for clean slicing.
06 - Unwrap the chilled rolls and slice each into 6 even pinwheels. Arrange on a serving platter and serve immediately or keep refrigerated until ready to serve.