Making Crispy Rosemary Chicken and Fries is straightforward if you follow these detailed steps:

1. Preheat Oven: Preheat your oven to 425°F (220°C).
2. Prepare Chicken Marinade: In a bowl, combine minced rosemary, garlic, salt, black pepper, paprika, and olive oil. Mix well to form a marinade.
3. Marinate Chicken: Rub the marinade generously over the chicken thighs, ensuring each piece is well-coated. Let it marinate for at least 15 minutes for better flavor.
4. Prep Potatoes: While the chicken marinates, peel and cut the russet potatoes into fries. You can choose to soak them in water for 10 minutes to eliminate excess starch, which will help in achieving crispiness.
5. Season Fries: Drain the potatoes and pat them dry with a towel. Toss them with garlic powder, onion powder, salt, and a tablespoon of cooking oil.
6. Combine and Bake Chicken: Place the marinated chicken thighs on a baking sheet lined with parchment paper. Arrange the fries around the chicken, spreading them out evenly.
7. Bake: Bake in the preheated oven for 35-40 minutes or until the chicken reaches an internal temperature of 165°F (74°C) and the fries are golden brown and crispy.
8. Flip Fries: Halfway through the baking time, flip the fries to ensure they cook evenly.
9. Rest the Chicken: Once baked, allow the chicken to rest for about 5 minutes before serving, helping the juices settle.
10. Garnish: For a lovely presentation, garnish the dish with fresh rosemary sprigs.

Following these steps will ensure you achieve a perfectly crispy and flavorful dish that is sure to please.