Cut & chill the watermelon: Slice the rind off a seedless watermelon. Cut the flesh into 12 clean, uniform 2"×2" square pieces about 1" thick. Arrange on a large marble board or serving platter and refrigerate while you prepare the filling. Cold watermelon holds the topping better and tastes more refreshing against the warm-spiced filling.
Make the spiced yogurt base: In a large mixing bowl, combine 1 cups thick plain Greek yogurt (full-fat) and 1 tablespoons olive oil. Add 0.5 teaspoons dried oregano, 0.5 teaspoons regular salt, 0.3 teaspoons black salt / kala namak (Indian grocery or Amazon), 0.5 teaspoons chaat masala (MDH or Everest brand), 0.5 teaspoons roasted cumin powder, 0.5 teaspoons red chili powder (or Kashmiri red chili powder for milder heat), and 0.5 teaspoons garlic powder all at once. Mix well until all spices are fully combined into the yogurt and the mixture is smooth and deeply aromatic. Add 1 tablespoons pure honey and stir again. Taste and adjust seasoning — this is the backbone of your filling and should be boldly flavored.
Fold in chickpeas & vegetables: Add 0.5 cups chickpeas / garbanzo beans (canned, drained & rinsed, or boiled), 0.3 cups cucumber (Persian or English), finely diced, 2 tablespoons mixed color bell peppers (red, yellow, orange), finely diced, 0.3 cups white or yellow onion, finely diced, 2 tablespoons Kalamata olives, diced, and 2 tablespoons crumbled feta cheese directly into the spiced yogurt. Fold everything together gently so the chickpeas stay whole and the vegetables keep their crunch. Make sure every part of the mix is coated in yogurt — stir thoroughly but do not mash.
Add fresh herbs & chili: Fold in 1 green chili pepper or jalapeño, finely chopped, 5 fresh mint leaves, finely chopped, and 1 tablespoons fresh cilantro, finely chopped. These go in last so they stay bright green and fresh. Give everything one final gentle stir. If making ahead, cover and refrigerate the filling for up to 24 hours at this point.
Assemble the bites: Retrieve watermelon squares from the refrigerator. Using a small spoon or cookie scoop, mound a generous portion of the chickpea filling onto the center of each 12 seedless watermelon squares, cut 2"×2" and 1" thick. Press a small appetizer fork or cocktail pick into the side of each watermelon square for easy pick-up. Don't be shy with the filling — a full, generous mound looks far better than a sparse one.
Garnish with pomegranate & herbs: Scatter 3 tablespoons fresh pomegranate seeds / arils (pre-packed at Trader Joe's or Whole Foods) over each topped bite. Add a small pinch of extra fresh 1 tablespoons fresh cilantro, finely chopped on top of each one. The ruby-red pomegranate seeds against the pale filling and red watermelon is what makes these look stunning on a platter.
Drizzle balsamic glaze & serve: Finish each bite with a thin, artistic drizzle of 2 tablespoons balsamic glaze (thick syrupy reduction — not plain balsamic vinegar) directly over the filling. The dark glaze against the bright garnishes creates a beautiful contrast. Serve immediately while the watermelon is cold and the filling is fresh.