"Don't sleep on the Ritz topping...."
boneless skinless chicken breasts (about 2 lb.)
Kosher salt
Freshly ground black pepper
extra-virgin olive oil
(10.5-oz.) can cream of chicken
(8-oz.) container sour cream
cloves garlic, minced
poppy seeds
lemon zest (optional)
freshly chopped parsley, divided
Nonstick cooking spray
sleeve buttery crackers, such as Ritz
freshly grated Parmesan
melted butter