Preparation:

• Preheat your oven to 200°C (180°C for fan-assisted ovens) or gas mark 6.
• Lightly grease a baking dish large enough to accommodate the chicken breasts.

Marinating the Chicken:

• In a small bowl, mix together the olive oil, all-purpose seasoning, garlic powder, dried thyme, dried rosemary, paprika, salt, and black pepper.
• Pat the chicken breasts dry with paper towels and place them in the greased baking dish.
• Pour the prepared seasoning mixture over the chicken breasts, ensuring they are evenly coated on both sides.
• Cover the dish with plastic wrap and let the chicken marinate in the refrigerator for at least 30 minutes (for more intense flavour, you can marinate it for up to 4 hours).

Baking the Chicken:

• Once the chicken has marinated, remove the dish from the refrigerator and let it sit at room temperature for 10 minutes.
• Zest the lemon over the chicken breasts, and then drizzle the lemon juice on top.
• Place the baking dish in the preheated oven with slices of lemon and bake for approximately 25-30 minutes or until the chicken is cooked through and no longer pink in the centre.
• To ensure the chicken is fully cooked, use a meat thermometer to check that the internal temperature reaches 75°C.

Once the chicken is done, remove it from the oven and let it rest for a few minutes before serving.