Make the dressing: In a small bowl, whisk together the olive oil, vinegar, orange juice, zest, lemon juice, maple syrup, cumin, coriander, cinnamon, salt, and a pinch of pepper. Set aside.
Heat the oil in a large skillet over medium heat. Add the scallions, garlic, pinches of salt, and pepper and cook for 1 minute until soft. Reduce heat to low and add the cooked rice, using the back of a wooden spoon to break up any clumps. Heat until warmed through. Turn off the heat and stir in the dressing, pistachios, parsley, and pomegranates. Top with mint leaves and roasted chickpeas, if using. Season to taste and serve.