1Heat oven to 350°F. Spray 13x9-inch (3-quart) glass baking dish with cooking spray. Cook and drain macaroni as directed on package, using minimum cook time.
2Meanwhile, in Dutch oven, melt butter over low heat; stir in flour with whisk until blended. Cook and stir 1 minute. Gradually stir in milk with whisk; cook over medium heat 5 to 8 minutes, stirring constantly, until thickened. Remove from heat. Add 3 cups of the cheese and the salt; stir until smooth.
3Stir cooked macaroni into cheese sauce. Stir in chipotle chile, adobo sauce and cilantro. Spoon mixture into baking dish. Sprinkle with chips and remaining 1 cup cheese.
4Bake uncovered 5 to 10 minutes or until bubbly and cheese is melted.