Begin by squeezing the juice from half the lemon and adding the pepper to the chicken.
Grill the chicken either on an outside grill or indoor grill pan until well done or the internal temperature of 165*.
While the chicken is grilling if you have not already, steam the spaghetti squash per these instructions. Scrape the inside of the spaghetti squash and set it aside.
Chop up the rainbow chard and set aside along with the spaghetti squash and onion.
Add the olive oil into a cast iron skillet and warm up to medium heat.
Add in the crushed garlic and sea salt.
Add in the spaghetti squash, chard, and onion.
Saute for about 5 minutes or until the chard is soft.