Preheat oven to 375°F (190°C). Spray a 2-quart (about 11 x 7-inch or deep 8-inch or 9-inch square) baking dish with cooking spray. Set aside.
In a large skillet over medium heat, cook beef and onion until beef is no longer pink (about 6-8 minutes), breaking up the meat with a wooden spoon as you stir.
Drain off any excess fat in the pan.
Stir salsa, corn, tomatoes, chili powder, smoked paprika, cumin, salt, and pepper into the skillet with the beef and onion. Transfer mixture to prepared baking dish. Sprinkle with 1 cup of the cheese.
Unroll the sheet of dough (if using crescent rolls, press perforations to seal). Place dough on top of meat mixture. Sprinkle with remaining ½ cup of cheese.
Bake for 15-20 minutes, or until heated through and crust is golden brown.