1 medium red onion, root end intact, cut into 8 wedges
¾ cup plain whole-milk Greek yogurt
2 tablespoons finely chopped fresh dill
1 ripe tomato, cored and cut into 8 wedges
Pita bread, to serve
Directions
In a colander set over a bowl, toss the shredded cucumber with ½ teaspoon salt. Set aside to drain for at least 10 minutes. Meanwhile, in a large bowl, whisk together 2 tablespoons of oil, 2 teaspoons of lemon juice, two-thirds of the garlic, 1 tablespoon of oregano, 1 teaspoon salt and ¾ teaspoon pepper. Add the chicken and toss to coat; let stand at room temperature while the broiler heats.
Heat the broiler with a rack 4 inches from the element. Line a rimmed baking sheet with foil and set a wire rack on top. Arrange the chicken in a single layer on the center of the rack, then place the onion wedges around the outer edges. Broil until the chicken is lightly charred on both sides, about 12 minutes, flipping the pieces halfway through (there's no need to flip the onions).
While the chicken cooks, in a medium bowl, whisk together the yogurt, the remaining 2 tablespoons oil, the remaining 2 teaspoons lemon juice, the remaining garlic and the dill. A handful at a time, squeeze the shredded cucumber to remove as much moisture as possible, then stir into the yogurt mixture; set aside.
Transfer the chicken and onion to a serving platter, then sprinkle with the remaining 1 tablespoon oregano. Place the tomato and lemon wedges on the platter and serve with the tzatziki.
