Begin by stirring together the Laughing Cow cheese wedges and ranch seasoning until smooth.
Mix the chopped ham, red pepper, green pepper, and reduced-fat Mexican cheese in a separate bowl.
Spread the ranch cheese mixture onto each spinach tortilla, then sprinkle the ham and pepper mixture evenly over the top.
Roll the tortillas tightly into logs and refrigerate them for 30-60 minutes so they slice cleanly.
Cut each tortilla into 8 pieces. Remove the end pieces if they don't have enough filling.
Arrange the pinwheels on a platter in rows, forming a Christmas tree shape. Tuck fresh rosemary sprigs along the edges to look like evergreen branches.
Cut a star shape into the slice of cheese and place it on top of the tree.