Bring a large pot of water to a boil to cook pasta (cook according to directions on package, to al dente). Start cooking the pasta in the boiling water when the wine is reducing just before step 7.
Dab chicken pieces dry with paper towels. Toss with flour, Italian seasoning and salt and pepper to taste.
Meanwhile melt 3 tablespoon butter with 1 tablespoon olive oil in a 12-inch non-stick skillet over medium-high heat.
Add chicken in a single layer and let sear until browned on bottom, about 4 minutes, then turn and let cook through about 2 - 3 minutes.
Transfer chicken and butter mixture to a bowl or large plate. Tent with foil to keep warm.
Return pan to medium-low heat. Melt 1 tablespoon butter. Add garlic and sauté about 20 seconds, don't brown it.
Pour wine and red pepper flakes into butter garlic mixture in skillet and let simmer until reduced by about ¾, about 5 minutes.
Add remaining 4 tablespoon butter and let melt.
Remove from heat, stir in lemon juice. Return chicken to skillet and toss with sauce, season with salt and pepper as needed.
Toss drained pasta with chicken, sauce mixture, and parsley. Garnish servings with parmesan and serve warm.