Season chicken breasts with Italian seasoning, garlic powder, paprika, salt, and pepper.
Heat olive oil in large skillet over medium-high heat. Cook chicken 5-7 minutes per side until internal temperature reaches 165°F. Remove and set aside.
In same skillet, melt butter. Add garlic and red pepper flakes, cook 30 seconds.
Add shrimp, cook 2-3 minutes per side until pink. Add wine and lemon juice, simmer 1 minute. Remove shrimp.
Add cream and broth to pan. Simmer, add Parmesan and butter. Stir until smooth.
Optional: Mix cornstarch with 1 tablespoon water, add to thicken sauce.
Return chicken and shrimp to pan, coat with sauce.
Garnish with parsley and serve.