How to Make It
Heat a large skillet over medium. Add pork, water, and 1/2 cup of the Memphis BBQ Sauce; cook, tossing occasionally, until mixture is thoroughly heated, about 5 minutes. Remove from heat; cover to keep warm.
Melt butter in a medium saucepan over medium-high. Whisk in flour; cook, stirring constantly, until golden brown and beginning to smell nutty, about 2 minutes. Whisk in milk; bring to a simmer over medium-high, stirring occasionally. Remove from heat. Gradually add cheese, stirring until completely melted. Stir in salt and cayenne.
Arrange chips on a platter; top evenly with pork. Drizzle with cheese sauce and remaining 1/2 cup Memphis BBQ Sauce; top with jalapeño chiles. Serve immediately.