Preheat oven to 425F and get out a roasting pan
In a small bowl combine your sea salt, pepper and chicken seasoning so it’s easily accessible
Cover chicken in avocado oil rub it in and then evenly coat with sea salt, pepper and chicken seasoning. Pour some oil and seasoning in the cavity as well
Put the lemon, onion into the cavity and tie up legs with cooking twine if needed
Place roasting pan into oven for 1.5 hours, checking every 30 minutes and basting. I use an eclectic thermometer to make sure it’s cooked through around the 1 hour mark. As soon as chicken (not close to bone) gets to 165 degrees remove and let sit for 10 minutes minimum before cutting and serving.