Start by preparing all your fresh ingredients while the hummus is still in its container. Dice the English cucumber into small 1/4-inch cubes and place in a bowl. Quarter the cherry tomatoes and halve the kalamata olives, keeping them in separate bowls. Chop the fresh parsley finely. This mise en place approach ensures you're not scrambling during assembly and allows you to work efficiently without the hummus drying out.
Spread the hummus evenly into a shallow serving dish (a 9-inch pie dish or similar works beautifully for presentation). Use an offset spatula or the back of a spoon to create an even, smooth layer. I like to leave the hummus slightly rustic rather than perfectly flat—the small peaks and valleys help hold the toppings in place and create a more appealing presentation.
Arrange the prepared vegetables and herbs strategically over the hummus base in concentric circles or sections for an attractive presentation. Start with the diced cucumber, then add the quartered tomatoes, followed by the halved olives. Sprinkle the feta cheese crumbles evenly across the top, then finish with the chopped fresh parsley. Drizzle the extra virgin olive oil over everything and sprinkle the dried oregano as the final touch for a pop of color and seasoning.
Transfer the dip to your serving table immediately. I find that serving it right away gives you the best texture—the hummus stays creamy and the vegetables maintain their crispness. Provide pita chips, vegetables, or flatbread on the side for dipping, and enjoy!