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1
Mix Greek yogurt, oregano, lemon juice, black pepper, and granulated garlic together in a large bowl. Add chicken and coat with yogurt mixture. Cover and refrigerate; let marinate 1 1/2 hours.
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2
Combine chicken broth, quinoa, and garlic in a small saucepan and bring to a boil. Cover and reduce heat to low. Simmer until quinoa is tender and water is absorbed, about 20 minutes.
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3
Set oven rack about 6 inches from the heat source and preheat the oven's broiler. Line a baking sheet with aluminum foil. Place peppers with cut sides down onto the prepared baking sheet.
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4
Cook under the preheated broiler until the skin of the peppers has blackened and blistered, 5 to 8 minutes. Let peppers cool for a few minutes before slicing and placing in a bowl.
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5
Place tomatoes, chickpeas, olives, and onion each into a separate bowl.
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6
Preheat an outdoor grill for medium heat and lightly oil the grate.
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7
Combine olive oil, vinegar, feta cheese, lemon juice, black pepper, oregano, dill, and granulated garlic in a bowl. Whisk dressing, making sure to break up feta cheese.
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8
Grill chicken until no longer pink in the center and the juices run clear, 8 to 12 minutes. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C). Remove from heat and let rest about 10 minutes.
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9
Assemble 6 bowls by spooning quinoa into the bottom. Add cucumbers, roasted peppers, tomatoes, olives, chickpeas, and red onions around the perimeter of the bowl. Add chicken.
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10
Whisk dressing really well and spoon equally over bowls.
