Heat oven to 375°F and line a baking sheet with parchment.
Unroll crescent dough and separate into 8 triangles.
Combine chicken, marinara, mozzarella, Parmesan, Italian seasoning, garlic powder, salt, and pepper.
Add 1 Tbsp filling to each triangle’s wide end, roll up, and seal edges.
Place rolls on sheet, point-side down. Bake 12–15 minutes until golden.
Cool slightly. Serve warm with extra Parmesan or parsley.