Preheat oven to 350°F. Spray a 12-inch cast-iron skillet or other oven-safe skillet with cooking spray.
Place pecans on a small baking sheet; bake 10 minutes or until lightly toasted and fragrant. Set aside to cool
Whisk butter and sugars in a large bowl 2 to 3 minutes or until light, glossy, and mixture runs off whisk in a ribbon fashion when lifted from bowl.
Whisk in eggs and egg yolks, one at a time, beating well after each addition. Whisk in vanilla.
Add flour, baking soda, and salt, and stir using a wooden spoon or rubber spatula until flour is just incorporated. Stir in chocolate chips and toasted pecans.
Spoon batter into prepared skillet and press down into an even layer using the back of a spoon or spatula. Lightly sprinkle with desired amount of sea salt.
Bake 20 to 22 minutes or until edges are golden brown and center is still slightly gooey. Serve warm from oven with vanilla bean ice cream.