Wash and dry the cucumbers and peppers thoroughly. Slice the cucumbers into thin rounds, aiming for even slices that maintain crunch. Slice the peppers into thin strips, removing seeds if desired for less heat or including seeds for extra spice.
Place the sliced cucumbers and peppers into a large mixing bowl. Add the ground cumin, lemon zest, and a pinch of salt and black pepper.
Drizzle the olive oil over the vegetables. Toss everything gently with tongs or two spoons until well coated, ensuring the spices are evenly distributed and the vegetables glisten with the oil.
Taste the salad and adjust the seasoning with additional salt, pepper, or lemon zest if needed. For more heat, add sliced hot peppers or a pinch of chili flakes.
Serve immediately while the vegetables remain crisp and fresh, or refrigerate for up to 30 minutes to let flavors meld.
Enjoy this vibrant, crunchy salad as a bright side or a refreshing snack on a warm day.