Preheat your oven to 350°F (175°C) and grease a 9 x 5-inch loaf pan with nonstick spray.

In a large mixing bowl, combine the flour, sugar, baking powder, baking soda, and salt. Stir well to ensure everything is evenly distributed.

In another bowl, whisk together the melted butter, eggs, and vanilla extract until smooth and well blended.

Pour the wet mixture into the dry ingredients, gently folding them until just combined. Be careful not to overmix.

Carefully fold in the diced peaches and chopped pecans.

Transfer the batter to the prepared loaf pan, smoothing the top.

Place the pan in the preheated oven and bake for 60-70 minutes or until a toothpick inserted into the center comes out clean.

Let the bread cool in the pan for 10 minutes before transferring it to a wire rack to cool completely.