Cut English cucumber into 3-inch lengths, then thinly slice lengthwise, avoiding center. Cut slices into matchsticks. Peel jicama and thinly slice. Working with several slices at a time, stack and cut lengthwise into matchsticks. In a bowl, toss jicama, cucumber, honey, and fresh lime juice until combined. Season with coarse salt and chili powder.
I would use less lime juice and add more chili powder if I would make it again.