In a large bowl, combine the olive oil, lemon juice, lemon zest, minced garlic, oregano, thyme, paprika, salt, and pepper. Mix well to create a marinade.
Add the chicken thighs to the marinade and ensure they are fully coated. Let them marinate for at least 30 minutes (or up to 2 hours in the refrigerator for more flavor).
On a large sheet pan, spread out the potato wedges, red bell pepper slices, and red onion wedges. Drizzle with a bit of olive oil and season with salt and pepper. Toss to combine.
Remove the marinated chicken from the bowl and place it on top of the vegetables on the sheet pan.
Pour any remaining marinade over the chicken and vegetables.
Bake in the preheated oven for 30-35 minutes, or until the chicken is cooked through and the potatoes are tender and golden, tossing everything halfway through for even cooking.
If desired, sprinkle crumbled feta cheese on top during the last 5 minutes of baking for added flavor.
Once done, remove from the oven and let it rest for a few minutes before garnishing with fresh parsley.
Notes
For added flavor, marinate the chicken for up to 2 hours.