1. Season the Chicken

1. In a large bowl, combine the chicken fillets with salt, spicy paprika, minced garlic, and lemon juice.
2. Mix well to ensure the fillets are evenly coated. Set aside to marinate while preparing the stuffing.

2. Prepare the Stuffing

1. Heat butter and a drizzle of olive oil in a skillet over medium heat.
2. Add minced garlic and cook for about 1 minute until fragrant.
3. Stir in chopped onion and cook until translucent, around 3-4 minutes.
4. Add bell pepper and grated carrots. Season with salt and spicy paprika. Cook for 5-7 minutes, stirring occasionally, until vegetables are tender.
5. Remove from heat and stir in parsley, coriander, crème fraîche, and mozzarella cheese. Mix well and let cool slightly.

3. Stuff the Chicken

1. Preheat your oven to 375°F (190°C).
2. Lay the marinated chicken fillets flat on a cutting board. Spoon the stuffing mixture into the center of each fillet.
3. Roll the chicken tightly around the stuffing and secure with toothpicks if necessary.

4. Bake the Chicken

1. Arrange the stuffed chicken fillets seam-side down in a baking dish.
2. Drizzle with olive oil and cover with aluminum foil.
3. Bake for 25-30 minutes, or until the internal temperature of the chicken reaches 165°F (74°C).
4. Remove the foil and bake for an additional 5-10 minutes to achieve a golden-brown top, if desired.

5. Serve

1. Remove the toothpicks carefully before serving.
2. Garnish with chopped parsley or coriander for added color and flavor. Serve hot and enjoy!