Preheat oven to 350° and place paper baking cups into 24 regular-sized muffin cups.
In a medium bowl, mix flour, baking powder, and salt.
In a large bowl, cream sugar, butter, and eggs.
Next, add vanilla extract.
On a low speed, alternate blending in dry mixture and milk.
Drop in 6 drops of red food coloring to every 1 drop of yellow until watermelon pink color is achieved. You may need more red, depending on how dark you want to make it.
Hand blend in chocolate chips. These will be your watermelon seeds.
Fill each muffin cup up about 2/3 full and bake for 20-25 minutes until an inserted toothpick comes out clean. Cool thoroughly before frosting.