Add the eggs, skim milk, pumpkin purée, vanilla extract, cinnamon, and pumpkin pie spice to a square baking dish. Whisk all of the ingredients together until combined.
Heat a non-stick skillet or griddle over medium heat until hot. Lightly coat the surface with cooking spray.
Dip a slice of bread into the pumpkin mixture making sure to coat both sides.
Place the bread in a skillet and allow each slice to cook 3-4 minutes. Use a spatula to flip the bread and continue cooking on the other side for another 3-4 minutes.
Repeat steps 3 and 4 until all of the French toast is cooked.