Oil a medium to large sheet pan or lay down parchment paper.
Add the marinade ingredients (olive oil, lemon zest, paprika, oregano, sea salt, and garlic) to a bowl and mix together.
Slice the onion, lemons, and potatoes and spread out over the sheet pan.
Douse the onion, lemons and potatoes in approximately half of the marinade mixture.
Add the chicken thighs on top of the lemons, onions, and potatoes in the pan. Use the rest of the marinade over the tops of the chicken thighs.
Add a desired amount of fresh parsley and dill to the pan as well.
Cook the mixture all together for 45 minutes-1 hour or until the thighs are golden brown and the internal temperature reaches at least 165F.
When the chicken is done, remove from the oven and garnish with feta cheese, more parsley and dill, and arugula.
Serve over a bed of more arugula if desired. Enjoy!