Season the chicken with salt and pepper. Heat olive oil in a large skillet over medium-high heat. Sear the chicken until golden and cooked through, about 5–7 minutes. Transfer to a plate and set aside.
In the same skillet, add a touch more oil if needed and sauté the garlic until fragrant, about 30 seconds. Don’t burn it—you’re aiming for sniff-worthy, not charred.
Pour in the chicken broth and cream. Stir, scraping up any flavorful browned bits from the bottom. Bring to a gentle simmer.
Add the pasta directly into the sauce. If you’re using uncooked pasta, you’ll need a bit more liquid and time; otherwise follow package directions and simmer until al dente, stirring occasionally.
Return the chicken to the skillet and add the Parmesan. Stir until the cheese melts into a glossy sauce. If the sauce thins too much, simmer a minute or two longer; if it’s too thick, splash in a splash of broth or cream.
Stir in peas (if using) and season with salt, pepper, and red pepper flakes to taste. Cook just until peas are tender and bright.
Garnish with parsley or chives and serve hot. Scoop, twirl, and pretend you set a Michelin-worthy table for yourself.