Step 1: Season chicken breasts with salt and pepper, then grill for 6-8 minutes per side until cooked through. Let rest before slicing.
Step 2: Cook tortelloni according to package directions, then drain and set aside.
Step 3: In a large skillet, melt butter over medium heat and sauté garlic for 1 minute until fragrant.
Step 4: Add heavy cream to the skillet and bring to a gentle simmer.
Step 5: Gradually stir in Asiago and Parmesan cheeses until melted and smooth.
Step 6: Add nutmeg and season with additional salt and pepper if needed.
Step 7: Toss cooked tortelloni in the Alfredo sauce until well coated.
Step 8: Serve tortelloni topped with sliced grilled chicken and garnished with fresh parsley.