Beer Cheese Mac

Name: Beer Cheese Mac
Ingredients: 3 tbsp. butter, plus more for pan; 3 tbsp. all-purpose flour; 1 c. beer; 1 c. milk; 2 c. shredded cheddar; 0.5 tsp. smoked paprika; 1 lb. elbow macaroni, prepared according to box; 8 slices bacon, cooked and crumbled; 1 c. panko bread crumbs; 2 tbsp. extra-virgin olive oil; 1 tbsp. chopped chives, plus more for garnish