Cook the pasta in a pot of salted water for 5 minutes.
Add the ground chicken, onion, and garlic to a skillet over medium-high heat. Cook until no pink remains, about 8 minutes. Add the optional ranch seasoning towards and cook for 1-2 more minutes.
Add the buffalo sauce and cook for 2-3 minutes until the mixture begins to thicken.
Reduce the heat to low. Mix the Greek yogurt and cheddar powder in a separate bowl and add to the skillet. Stir everything together before folding in the cooked pasta.
Top with the shredded cheese and broil on high for 5 minutes. Serve with fresh green onions, if desired.
Notes
*The nutrition facts are with 92/8 ground chicken. Using a leaner cut like 97/3 saves 4g of fat and ~40 calories per serving. And ground turkey works fine as a substitute for ground chicken. You could also reduce the amount of shredded cheese to further reduce the fat and calorie content.Each serving has 8 WW SmartPoints (blue plan).