
Warm the olive oil in a large skillet over medium heat. Add the thinly sliced chicken in an even layer and cook for 5-7 minutes, turning as needed, until golden on the outside and cooked through.

Add the minced garlic to the skillet and stir for 30 seconds, just until fragrant. Do not let the garlic brown, as it can turn bitter.

Pour in the heavy cream and bring it to a gentle simmer. Cook for 3-4 minutes, stirring occasionally, until the cream begins to reduce slightly.

Stir in the Parmesan cheese, salt, black pepper, and red pepper flakes. Keep the sauce at a low simmer and stir until the cheese melts and the sauce becomes smooth and lightly thickened.



Add the cooked pasta to the skillet and toss well until every piece is coated in the creamy sauce. If the sauce feels too thick, loosen it with a small splash of pasta water, milk, or cream.

Fold in the spinach, if using, and cook for about 1 minute, just until wilted.

Serve warm, topped with extra Parmesan and a little more black pepper or red pepper flakes if desired.

