Boil the pasta: Bring a large pot of salted water to a rolling boil. Cook your pasta until just al dente.
Reserve 1 cup of pasta water, then drain.
Prep the chicken: Drain canned chicken well. Use a fork to break up large pieces so it mixes evenly with the sauce.
Sauté aromatics: In a large skillet over medium heat, add olive oil and butter. When the butter melts, add minced garlic.
Cook 30–60 seconds until fragrant, not browned.
Warm the chicken: Add the flaked canned chicken to the skillet. Stir to coat in the garlicky butter. Season lightly with salt and pepper.
Cook 1–2 minutes to heat through.
Build the sauce: Pour in the heavy cream. Bring to a gentle simmer, then reduce heat to low. Stir in 1 cup of grated Parmesan until smooth.
If it’s too thick, splash in chicken broth or reserved pasta water a little at a time.
Brighten it up: Add a small pinch of lemon zest and a squeeze of lemon juice. Taste and adjust salt and pepper. Add red pepper flakes if you like a touch of heat.
Toss with pasta: Add the drained pasta directly to the skillet.
Toss until every strand is glossy and coated. If needed, loosen with more pasta water for a silky finish.
Finish and serve: Top with extra Parmesan and chopped parsley. Serve hot with a simple salad or steamed broccoli.