Place the chicken breasts between two sheets of plastic wrap or parchment paper and pound to an even 1/2-inch thickness to ensure even cooking.
Pat the chicken breasts thoroughly dry with paper towels to remove surface moisture.
In a shallow bowl, whisk together the flour, sea salt, black pepper, garlic powder, onion powder, and Italian seasoning.
Dredge each chicken breast in the seasoned flour mixture, shaking off any excess coating.
Heat the oil in a large cast-iron or heavy-bottomed skillet over medium-high heat until shimmering.
Place the chicken in the skillet and sear for 4-5 minutes without moving them to develop a golden-brown crust.
Flip the chicken breasts and cook for an additional 4-5 minutes until an instant-read thermometer registers 162°F to 165°F.
Remove the chicken from the pan and transfer to a plate; let it rest for at least 5 minutes to allow juices to redistribute.
While the chicken rests, deglaze the pan by adding the chicken broth and lemon juice, scraping up the browned bits (fond) with a spatula.
Simmer the liquid for 2 minutes, then stir in the butter and fresh herbs until the sauce is glossy. Pour the pan sauce over the chicken and serve.