Preheat oven to 425*
In a large bowl combine carrots, mushrooms, onions and garlic
Add olive oil, enough to coat and roughly 1-2 tsp of salt
Toss to coat thoroughly
In two large baking dishes transfer vegetables so that they make one even layer in each baking dish
Place chicken breast side up ON TOP of the vegetable in one of the baking pans
Drizzle olive oil over chicken and rub into skin, thoroughly coating
Generously sprinkle Maldon salt over entire surface of chicken
Generously sprinkle lemon pepper over entire surface of chicken
Gently rub salt and pepper into skin of chicken
Place chicken and additional pan of vegetable into oven and bake for 30 minutes
After 30 minutes, turn oven temp down to 400*
Add vegetables in extra pan into the pan with the chicken and gently combine all vegetable together
Continue to cook until the internal temp of the chicken reached 165*
Once desired temp is reached (about an addition 45 minutes), pull chicken and vegetable out of oven and cover loosely for 10 minutes
Let rest of 10 minutes before serving