Cube chicken breasts and season with salt, pepper, garlic powder, and onion powder.
On medium heat add avocado oil to a skillet and add seasoned chicken breasts to the pan.
Flip cubed chicken breasts to cook on all sides (~6 minutes, minimum temp 165℉).
Once chicken is cooked thoroughly remove to a plate & remove skillet from heat.
Once pan cools for ~1-2 minutes, add butter and return pan to medium heat.
Once butter has melted add chopped yellow onion and sauté until onions are translucent.
Add minced garlic and stir until aromatic (~30 seconds to 1 minute).
Add chicken stock and mix, scraping the bottom of the pan to deglaze.
Add pasta and black pepper to the liquid and stir. Bring mixture to a boil on medium/high heat.
Reduce (with the top off) for 10 minutes on medium heat.
Add heavy whipping cream and stir.
Add freshly grated parmesan cheese and lemon juice and stir.
Add the cubed chicken back to the pot.
Add frozen peas and stir. Continue to reduce and melt the cheese on medium heat until the mixture has reached the desired consistency.
Add half of the freshly chopped parsley and salt to taste.
Garnish your dish with the remainder of the fresh parsley and enjoy!