Gather flour, salt, pepper, Italian seasoning, and onion powder in a 1-gallon freezer bag. Add chicken pieces and shake until coated. Set aside.
In a small bowl, combine melted butter, minced garlic, and parsley. Whisk until mixed.
Heat olive oil in a large skillet over medium-high heat. Add coated chicken pieces and cook for 2-3 minutes on each side until golden brown.
Pour the garlic butter mixture over the chicken in the skillet and stir gently to coat. Cook for another minute.
Serve immediately while hot, paired with rice or noodles.