Preheat your oven to 375°F (190°C).
Lightly grease your muffin tin with cooking spray or butter.
Open the can of refrigerated crescent dinner rolls and unroll the dough. Pinch the seams together to create a solid sheet of dough.
Cut the dough into squares, roughly the size of your muffin tin cups.
Place each square of dough into the muffin tin, pressing it down gently to form a cup shape.
Place one piece of frozen popcorn chicken into each dough-lined muffin cup.
Spoon a generous tablespoon of spaghetti sauce over the chicken in each muffin cup.
Top each cupcake with a handful of shredded mozzarella cheese.
Sprinkle a bit of shredded Parmesan cheese on top of each cupcake.
Bake for about 15-18 minutes, or until the dough is golden brown and the cheese is bubbly.
Allow to cool for a few minutes, then remove from the tin and serve warm.