Preheat the oven to 350 degrees F.
Place the chicken in a large baking pan. Drizzle olive oil and nicely massage the chicken on one side.
Now spread 2 to 3 tablespoon of dry rub mix on the chicken, add 2 to 3 tablespoon of herbed butter, and nicely spread it so that the whole chicken is covered on one side (wings, breast, thighs).
Next, flip the chicken and repeat the same process. Apply olive oil -> dry rub mix -> herbed butter on another side of the chicken so that your whole chicken is now covered with the seasoning.
In another bowl, add potatoes, carrots, and onion with 1 or 2 tablespoon of olive oil and juice of a lemon and toss until combined. Spread this in the baking pan around the chicken.
Now bake the chicken in the preheated oven for 60 to 70 minutes or until the internal temperature is 165 degrees F or until the meat is no longer pink at the bone.
Remove from the oven and let this sit for 10 minutes before serving. On the serving plate, add a piece of roasted chicken, drizzle the melted herbed butter from the baking pan over the chicken, add roasted vegetables on the side, and enjoy!