Preheat the oven to 400 degrees F.
Add panko breadcrumbs to a large baking sheet. Spread into an even layer and spray carefully (not too close) with cooking spray. Bake for 3-4 minutes, stir, then bake for another 3-4 minutes or until golden brown.
Transfer breadcrumbs to a small bowl. Whisk in the salt, pepper, onion powder, garlic powder and paprika. Set aside.
In a separate bowl, whisk together the egg and almond milk. Set aside.
Cut chicken breast into 1-inch pieces.
Add an oven-safe wire metal rack on top of the large baking sheet and spray with cooking spray.
Create an assembly line of the egg mixture, bread crumbs and baking sheet. Using tongs (or your fingers), dip the chicken cube into the egg mixture and then into the bread crumb mixture. Place the chicken onto the wire rack and repeat until all the chicken is coated.
Generously spray the tops of the chicken nuggets with cooking spray then place in the oven. Bake for 15-20 minutes, or until cooked through and the internal temperature reaches 165 degrees F.
Serve with your favorite sauce! Honey mustard, ketchup, BBQ sauce, ranch, etc!