Finely grated zest of 1 orange, plus 3/4 cup fresh orange juice
Finely grated zest of 2 limes, plus 1/4 cup fresh lime juice
4 garlic cloves, chopped
3 tablespoons ancho chile powder
2 tablespoons chopped fresh oregano
Extra-virgin olive oil
Salt and freshly ground pepper
Four 8-ounce chicken breast halves on the bone, with skin
1 large chayote—halved lengthwise, pitted and cut into 12 wedges
1 seeded poblano, cut into thin rings
1 red onion, thinly sliced into rings
2 tablespoons each of thinly sliced cilantro and mint