Special equipment: 24 (6-inch) skewers
In a medium bowl combine the fennel seeds, orange zest, orange juice, and pepper. Gently stir in the feta and marinate for 1 hour or more.
To make the skewers, place a mint leaf about 3/4-inch up the skewer, then add an olive half, then a chunk of cucumber. Gently place a cube of the marinated feta on the end.