Cook the Pasta: Boil salted water in a pot. Add pasta and cook 8-10 minutes until al dente. Drain and set aside.
Prep the Chicken: Season chicken with salt/pepper. Sear in olive oil over medium heat (5-7 minutes per side) until cooked through. Slice after resting.
Start the Sauce: Sauté garlic in skillet for 30 seconds. Add cream and simmer gently.
Cheese It Up: Gradually stir in Parmesan until melted and smooth.
Add Veggies: Stir in tomatoes and spinach until spinach wilts (1-2 minutes).
Mix It All: Combine pasta and chicken with sauce. Toss to coat and adjust seasoning.
Notes
Storage: Refrigerate leftovers in airtight container for 3-4 days. Freeze for up to 2 months. Substitutions: Use gluten-free pasta, coconut cream for vegan option, or zucchini noodles for low-carb. Variations: Add red pepper flakes for heat, swap chicken for shrimp, or use tofu for vegan version.