In a saucepot over medium to medium-high heat, melt butter. Add flour and whisk together. When pale golden, add milk and whisk to thicken. Whisk in beer and bring to a bubble.
Add spices and Worcestershire to sauce then stir in cheese with a spoon. Reduce heat to low and keep sauce warm.
Preheat oven to 400°F.
In a skillet over medium-high heat, brown kielbasa. Remove to a paper towel-lined dish to drain.
Heat sauerkraut in a small pot with caraway seeds and jalapeños.
Toast chips to golden at edges in oven. Top with cheese sauce, kielbasa and some sauerkraut with jalapeños and serve.