In a medium bowl, combine the softened cream cheese, garlic powder, onion powder, salt, and pepper. Mix until smooth and well blended.
Lay one tortilla flat on a clean surface. Spread a generous layer of the cream cheese mixture evenly over the tortilla, leaving a small border around the edges.
Layer on a portion of the shredded chicken (or turkey), followed by a handful of baby spinach leaves, shredded carrots, and diced bell peppers.
Starting from one edge, carefully roll the tortilla tightly into a log shape. Make sure to keep the filling inside as you roll.
Once rolled, use a sharp knife to slice the pinwheel into 1-inch pieces. Repeat the process with the remaining tortillas and filling.
Arrange the pinwheels on a serving platter. For best flavor, cover and refrigerate for at least 30 minutes before serving to allow the flavors to meld.