Preheat your oven to 400 F.
In a bowl, combine olive oil, garlic, orange juice, lemon juice, dried oregano, paprika, diced onion, red pepper flakes, and season with salt and pepper to taste.
1 onion, 1 cup fresh orange juice, ¼ cup olive oil, 4 cloves garlic, ½ tbsp. dried oregano, ½ tsp. paprika, ¼ tsp. red pepper flakes, Sea salt and freshly ground black pepper
Place half the orange slices and half the lemon slices at the bottom of a baking dish.
2 oranges, 1 lemon
Arrange the chicken pieces on top of the sliced orange in the baking dish, and season to taste.
3 to 4 lbs. bone-in chicken parts
Top the chicken with the thyme, rosemary, and remaining orange and lemon slices.
2 to 3 fresh thyme sprigs, 2 to 3 fresh rosemary sprigs, ½ cup fresh lemon juice
Drizzle the orange-lemon juice mixture all over the chicken.
Place in the preheated oven and bake, uncovered, for 45 to 60 minutes.