01 - Cook bacon strips in a skillet over medium heat until thoroughly crisp. Transfer to paper towels to drain excess fat.
02 - In a small mixing bowl, combine ricotta cheese, chopped chives, and freshly ground black pepper. Stir until evenly blended.
03 - Arrange bread slices on a clean surface. Evenly spread butter on one side of each slice.
04 - On the unbuttered side of two bread slices, evenly distribute the ricotta mixture. Top each with shredded mozzarella and two bacon strips. Complete sandwiches with remaining bread slices, ensuring buttered sides face outward.
05 - Place sandwiches into a nonstick skillet over medium heat. Grill 3 to 4 minutes per side until bread is golden and cheese has fully melted.
06 - Slice sandwiches in half and serve immediately while hot.