Preheat oven to 375 degrees. Line a rimmed cookie sheet with parchment paper. Unroll the crescent roll dough on top of the parchment paper, lining up the edges and sealing with your fingers.
Push the dough against the sides of the pan to make a bit of crust to hold in all the toppings. Cook the chorizo with the diced onion in a large skillet over medium high heat.
Pour in the center of the pan over the chorizo and crescent dough, allowing it to run to the edges of the pan. Sprinkle the top with the shredded cheese.