This is a really refreshing appetizer. It's really easy to make and looks very cute. Depending on the length of your cucumbers, you may end up with more or less rounds (if you have more, slightly increase your filling quantities; if you have fewer, eat the filling on a cracker). —Mariya
Rinse the cucumbers and peel them using a channel knife-giving them zebra stripes (do so by peeling lengthwise, approximately an 1/8th of an inch apart). Once peeled, cut the tips off each end and cut each cucumber (crosswise) into 1.5 inch thick rounds. Using a melon baller, remove the centers; place a damp cloth over the cucumbers and reserve.
Heat a pan over medium-high heat and add bacon; cook until golden and just crisp; remove from the pan, allow to cool, and mince.
In a bowl, mix bacon, tomato, celery, shallot, jalapeno, parmesan, minced parsley, lime juice, olive oil, vinegar, paprika, salt, and pepper.
Lay the crackers out on a plate; place one cucumber round on each cracker; fill each cucumber round with bacon mixture; garnish each with a parsley leaf.