Preheat oven to 375. Line a baking sheet with foil. Grease.
Combine ricotta, Parmesan, egg, parsley, and garlic powder in a small bowl and mix well. Stir in sausage and Jack cheese.
Remove dough from can. Cut rectangle in half lengthwise. Spoon 1/2 cup of mixture onto one end of each rectangle.
Fold dough in half. Press edges with fork to seal. Place on baking sheet. Pierce dough with fork.
Heat marinara.
Bake until golden, about 21 minutes. Let stand for 5 minutes. Serve with marinara.