Pat chicken breasts dry and season generously with salt and pepper
Heat 1 tablespoon butter in a large skillet over medium-high heat
Sear chicken 6-7 minutes per side until golden brown and cooked through (165°F)
Remove chicken and tent with foil
Add remaining butter to pan, then garlic; cook 30-60 seconds until fragrant
Whisk in flour and cook 1 minute
Gradually add chicken broth, whisking constantly
Slowly add cream, whisking continuously
Simmer gently until sauce thickens slightly, about 3-4 minutes
Stir in parmesan cheese and Italian seasoning
Return chicken to pan to warm through
Garnish with fresh parsley and serve immediately