Heat a large skillet over medium-high heat then spray with nonstick spray. Season chicken breasts on both sides with seasoned salt and pepper then saute for 3-4 minutes on each side, or until cooked through. Remove chicken to a plate then tent loosely with foil and set aside. Turn heat down to medium (remove skillet from heat to cool for a couple minutes if using a cast iron skillet like the one pictured,) then add a drizzle of extra virgin olive oil to the skillet. Add shallots then saute until golden brown, 1 minute. Add prosciutto then saute until crisp, 3-4 minutes. Add garlic then saute for 30 more seconds. Add broth and butter then simmer until sauce has reduced and slightly thickened, 3-4 minutes. Add capers and a squeeze of fresh lemon juice, then plate chicken and serve sauce on top.