Preheat the oven to 350°F and line a baking sheet with parchment paper or a silicone liner.
In a small bowl, whisk together the flour and baking soda. Set aside.
Using a stand or hand mixer and medium bowl, beat together the butter and sugars until thick and fluffy, about 3 minutes. Scrape down the sides of the bowl, and add the eggs one at a time, beating well after each addition. Stir in the vanilla.Add the dry ingredients to the wet and mix just until combined. Fold in the chocolate chips and chopped peach.
Place large dollops (2-3 tbsp.) of dough on the baking sheet, leaving 2-inches of space between each. Bake for 10 to 12 minutes or until the edges of the cooking are golden brown, and the centre is slightly soft.Cool on the pan for 5 minutes before transferring to a cooling rack.