Bring a large pot of salted water to a boil.
Cook the high-protein pasta according to the package directions until al dente. Reserve ½ cup pasta water, then drain.
Season the chicken with garlic powder, Italian seasoning, paprika, salt, and black pepper.
Heat the olive oil in a large skillet over medium-high heat.
Cook the chicken for 6 to 8 minutes, stirring occasionally, until browned and fully cooked.
Add the cottage cheese, Parmesan, milk, garlic, lemon juice, and black pepper to a blender.
Blend until completely smooth and creamy.
Reduce the skillet to low heat.
Pour the blended sauce over the cooked chicken.
Add the cooked pasta and spinach.
Stir until the spinach wilts and everything is coated. Add a little reserved pasta water if you want a thinner sauce.
Sprinkle with chopped parsley and extra Parmesan if desired.
Serve immediately while warm.