Bobette’s Quick and Cheesy Enchiladas

1 (8oz.) package light Neufchatel cream cheese, softened 1 1/2 cup (6oz.) shredded Monterey Jack and Colby cheese, divided 1/2 cup light sour cream 1 1/3 cup salsa, divided 2 cups chicken fajita strips, thawed 1 package flour tortillas 2 cups shredded lettuce 1 cup...