Creating the Best Peruvian Chicken with Creamy Green Sauce is straightforward. Just follow these steps:

1. Prepare the Marinade: In a large bowl, combine paprika, cumin, oregano, garlic powder, salt, and black pepper. Squeeze in the lime juice and add olive oil. Whisk together until well combined.
2. Marinate the Chicken: Add the chicken thighs and breasts to the marinade. Ensure they are evenly coated. Cover and refrigerate for at least 30 minutes (or up to overnight for richer flavor).
3. Preheat the Oven: Preheat your oven to 400°F (200°C).
4. Bake the Chicken: Place the marinated chicken on a baking sheet lined with parchment paper. Bake in the preheated oven for about 30 minutes, or until the chicken is cooked through and reaches an internal temperature of 165°F (74°C).
5. Prepare the Green Sauce: While the chicken is baking, combine cilantro, jalapeño, mayonnaise, Greek yogurt, salt, and pepper in a blender. Blend until smooth and creamy. Adjust seasoning to taste.
6. Serve: Once the chicken is done, remove it from the oven and let it rest for a few minutes before serving with the creamy green sauce.

By following these steps, you’ll create an incredible dish that embodies the authentic flavors of Peru.