In a skillet over medium/high heat, heat up the avocado oil and diced chicken breast. When the chicken is 75% done, add in the sweet potatoes and salt + pepper (to taste). Use a pan that has a lid to help it cook faster. **If needed, add more avocado oil to pan.
As the chicken and sweet potatoes cook, work on the chimichurri sauce. All you have to do is put every ingredient for the sauce into a food processor and process it until everything is incorporated together. **It will NOT be a smooth sauce. You'll still see chopped parsley and cilantro and garlic pieces. That's OK! Set aside.
When sweet potatoes are easy to put a fork through and chicken is not pink in the center, add in the yellow squash and cook for an additional 5 minutes. (I like my yellow squash al dente versus super soft).
Take the skillet off the heat. Put the contents into a bowl and drizzle the chimichurri sauce over it and ENJOY!