Prepare a marinade for the chicken. Combine the lemon juice, olive oil, garlic, salt, pepper, cumin, paprika, turmeric, cinnamon and red pepper flakes in a large bowl, then whisk to combine. Add the chicken and toss well to coat. Cover and store in refrigerator for at least 1 hour and up to 12 hours.
When ready to cook, heat oven to 425 degrees. Use a tablespoon of olive oil (or spray) to grease a glass baking dish. Place the quartered onion in the bottom of the dish and layer the chicken pieces over it. Pour on marinade.
Step 3
Put the baking dish in the oven and roast about 30 to 40 minutes, until the chicken reaches 160 degrees Fahrenheit. Remove from the oven, allow to rest a couple of minutes (it should reach 165 degrees Fahrenheit), remove the chicken and slice.
Put chicken in serving bowl, add onions and marinade to serve. Sprinkle with parsley.