01 - Wash cucumbers thoroughly and slice them into 1/8-inch rounds using a mandoline for even thickness.
02 - Place cucumber slices in a large bowl. Whisk together olive oil and lemon juice in a small bowl, then drizzle over cucumber slices and toss gently to coat.
03 - Combine all ranch seasoning ingredients in a separate bowl. Sprinkle evenly over the coated cucumber slices, tossing to ensure even distribution.
04 - Arrange cucumber slices in a single layer on dehydrator trays or on baking sheets lined with parchment paper.
05 - If using a dehydrator: Set to 135°F and dry for 2-4 hours, flipping halfway through, until chips are crisp. If using an oven: Preheat to 200°F and bake for 2-3 hours, flipping halfway, until chips are dry and crispy.
06 - Allow chips to cool completely before serving for maximum crunch.