Set the oven to 425°F.
Choose a 9x13 baking dish or a rimmed sheet pan.
Pat the chicken dry.
Season the chicken with kosher salt, black pepper, smoked paprika, and dried oregano.
Drizzle the chicken with olive oil.
Lay the chicken in a single layer with space between pieces.
Whisk the honey, crushed red pepper flakes, minced garlic, lemon juice, and apple cider vinegar in a bowl.
Stir in 1/2 cup crumbled feta until the sauce looks creamy.
Taste the sauce and add more crushed red pepper flakes if you want more heat.
Pour the sauce over the chicken.
Toss the chicken to coat it in the sauce.
Spread the chicken back into a single layer.
Bake the chicken thighs for 18 to 22 minutes depending on size.
Bake chicken breasts for 16 to 20 minutes depending on thickness if using breasts.
Cook until the thickest part reaches 165°F.
Remove the pan from the oven.
Spoon sauce over each piece of chicken.
Sprinkle the remaining 1/4 cup finishing feta over the chicken.
Broil for 1 to 2 minutes and watch closely.
Rest the chicken for 5 minutes.
Sprinkle chopped parsley over the top if using.
Drizzle 1 teaspoon honey over the finished chicken if you want extra shine.