Preheat the oven to 425° F.
Cut the vegetables and mince the garlic.
Place the vegetables and chicken breasts on a 13x18 sheet pan.
Drizzle the avocado oil over everything in the sheet pan.
Squeeze the lemon juice over everything in the sheet pan.
Sprinkle the dried seasonings over the chicken and vegetables.
With clean hands, rub the seasonings over both sides of the chicken and vegetables,
Place the sheet pan in the oven for 30 minutes.
Toss the vegetables.
Cook for an additional 10 to 15 minutes or until the chicken has an internal temperature of 165° F.
Transfer the chicken to a plate and broil the vegetables on high (500° F) for up to 5 minutes, checking every 1 minute to achieve a nice golden color on the potatoes. Keep an eye on the peppers to make sure they do not burn.
Sprinkle fresh parsley over the chicken and drizzle a bit of avocado oil on it, then enjoy.