Step 1

Heat olive oil in a large skillet over medium heat.

Step 2

Season chicken with salt, pepper, and Italian seasoning and add to skillet.

Step 3

Cook chicken for about 6 minutes per side, or until no longer pink.

Step 4

Remove from skillet and set aside.

Step 5

Add butter to the skillet and melt over medium heat.

Step 6

Add asparagus and onions to skillet; cook for 4 minutes, or until just tender.

Step 7

In the meantime, combine half & half, flour, cheese, lemon juice, garlic, salt and pepper in a mixing bowl; whisk until thoroughly incorporated.

Step 8

Add the prepared sauce to the skillet and bring to a boil.

Step 9

Place prepared chicken back in the skillet and lower heat to a simmer.

Step 10

Cook for 3 to 4 minutes, or until asparagus is tender and chicken is heated through.

Step 11

Remove skillet from heat.

Step 12

Spoon sauce over chicken breasts and top with lemon slices.

Step 13

Garnish with parsley and cheese.

Step 14

Serve.