Preheat oven to 375°F (190°C). Line a 9×5-inch loaf pan with parchment and lightly spray.
Cook bacon until crisp. Drain, crumble, and set aside.
In a large bowl, stir together eggs, milk, breadcrumbs, onion, garlic, Worcestershire sauce, ketchup, mustard, relish, salt, pepper, smoked paprika, and onion powder. Let sit 2–3 minutes.
Add ground beef, 1 cup cheddar, and about ⅔ of the crumbled bacon. Mix gently just until combined.
Press half the meat mixture into the loaf pan. Sprinkle ½ cup cheddar down the center (avoid edges). Add a little bacon if you want extra in the middle.
Add remaining meat mixture and smooth the top.
Stir glaze ingredients together and spread over the loaf.
Bake 50–60 minutes, until the center reaches 160°F (71°C).
Top with remaining ½ cup cheddar and the rest of the bacon. Bake 5–8 minutes more, until cheese melts.
Rest 10–15 minutes before slicing.