Slice the chicken into 1-inch slices. Season with garlic powder, onion powder, salt and pepper.
Add enough olive oil to coat the bottom of a large, high-sided skillet. Added the sliced chicken and cook, stirring occasionally, until chicken starts to develop some color, approximately 2-3 minutes.
Add the quinoa and chicken broth and stir to combine. Increase heat to high and bring to a boil, and then immediately reduce heat to medium-low. Cover and simmer until the chicken and quinoa are cooked through, approximately 10-12 minutes.
Uncover and stir in frozen peas, half & half, cream cheese, and half of the freshly grated Parmesan cheese. Stir to combine and remove from heat. Cover and let sit for another minute or two or until the cheese is completely melted.
Remove cover and stir in fresh parsley. Season with additional salt and black pepper, if desired, and serve immediately with remaining Parmesan cheese. Enjoy!