Monterey Chicken Puffs

This is similar to the Chicken or Turkey Roll Ups that I posted a while ago. The flavors are somewhat different but the concept is the same. DELICIOUS! ... And, you can change whatever filling ingredients you want to make this meal more fitting to your palate. Let me know if you have made something similar to this but with a different filling.

Ingredients
2 chicken breasts, cooked
1/2 cup monterey jack cheese
2-3 ounces cream cheese
1/4 - 1/2 cup onion
1 can crescent rolls
1/4 cup butter, melted
1/2 cup panko bread crumbs

Directions
1. Preheat oven to 350 degrees.
2. Mix the cooked chicken, monterey jack cheese, cream cheese, and onion. Salt and pepper to taste. Set aside.
3. Unroll the crescents but DO NOT break them into triangles. You want them in squares. Press along the seam of two crescents triangles together to make a rectangle. Roll out with a rolling pin to make a square. Do with the remaining crescents (you should have four squares).
4. Divide the mixture