Spread a thin layer of dill-infused cream cheese evenly over each slice of bread using a spatula or spreader. Set aside.
Arrange thin cucumber slices over half of the bread slices, overlapping slightly, leaving a small border around the edges for neatness.
Sprinkle lemon zest and freshly ground black pepper over the cucumber slices for added flavor and visual contrast.
Place the cucumber-topped bread slices on top of the plain cream cheese slices to form sandwiches, gently pressing to adhere.
Use a sharp knife to trim the crusts from the sandwiches, then cut each sandwich into quarters or halves to serve, revealing the colorful layers inside.
Arrange the finished sandwiches on a platter, optionally garnished with extra dill sprigs, and serve immediately with tea or as desired.