While cutting chicken and vegetables for the kabobs into cubes (about 1 inch), soak skewers in water for about 20 minutes.
In a blender, combine the cucumber, yogurt, and lemon juice. Lightly pulse 2 - 3 times. Add dill and salt/pepper to taste. Mix together, then refrigerate until ready to serve.
Heat the grill to 300 - 400 degrees (medium/high heat). Cook the chicken for about 5 minutes, then create the kabobs and continue cooking for 5-10 minutes, rotating occasionally.
Serve the kabobs with the Tzatziki sauce and a bed of multi-grain rice (optional). Enjoy!