Season your chicken breasts generously with Italian seasoning, crushed red pepper, salt, and pepper.

Heat a large skillet over medium heat and add olive oil. Place the seasoned chicken breasts in the skillet. Cook for 5-6 minutes on one side until golden, then flip and cook for another 5-6 minutes. Remove chicken and set aside.

In the same skillet, reduce heat slightly and add butter. Add chopped onion and asparagus, cooking for 2-3 minutes until softened.

Stir in minced garlic and sauté for about 30 seconds until fragrant.

Pour in the heavy cream and lemon juice, stirring to combine. Allow to simmer for 3-4 minutes.

Return the seared chicken to the skillet, ensuring it's coated with the sauce. Simmer together for another 3-4 minutes, adjusting seasoning as needed.

Remove from heat and serve hot, garnished with Parmesan cheese or fresh parsley if desired.