Savory Cheddar Waffle BLT With Egg

Name: Savory Cheddar Waffle BLT With Egg
Ingredients: 12 thick-cut bacon slices (about 1 pound); 3 Tablespoons melted unsalted butter, or more as needed; 2 Cups all-purpose flour; 2 Teaspoons baking powder; 1 1/2 Teaspoon kosher salt; 2 large eggs; 2 Cups whole milk; 2 Cups shredded Irish Cheddar cheese, such as Dubliner; 2 Tablespoons unsalted butter; 6 large eggs; Kosher salt; Freshly ground black pepper; 6 Tablespoons mayonnaise; 2 medium tomatoes, thinly sliced crosswise; 12 romaine lettuce leaves; 12 waffles; 12 slices thick-cut bacon, cooked