Season the chicken breasts with salt and pepper on both sides.
Sear the chicken:
Heat olive oil in a large skillet over medium-high heat.
Add chicken breasts to the skillet and cook for about 4-5 minutes per side until golden brown. Remove the chicken from the skillet and set aside.
Make the sauce:
In the same skillet, reduce the heat to medium and add the minced garlic. Sauté for about 30 seconds until fragrant.
Pour in the chicken broth and deglaze the skillet, scraping up any browned bits from the bottom of the pan.
Stir in the heavy cream, Parmesan cheese, Italian seasoning, and crushed red pepper flakes. Let it simmer for 2-3 minutes until the sauce thickens slightly.
Add sun-dried tomatoes and spinach:
Stir in the sun-dried tomatoes and spinach (if using). Let the spinach wilt for a minute.
Return chicken to the skillet:
Place the chicken breasts back into the skillet, spoon some sauce over the top, and let them simmer in the sauce for about 8-10 minutes until the chicken is fully cooked (internal temperature reaches 165°F).
Garnish and serve:
Garnish with fresh basil or parsley. Serve hot, and enjoy!
Tips:
You can serve this with cauliflower rice or zoodles for a complete keto meal.
Feel free to adjust the spice level by adding or reducing red pepper flakes.