Creating Longhorn Parmesan Crusted Chicken is straightforward if you follow these easy steps:

1. Preheat Oven: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper for easy cleanup.
2. Prepare Chicken: Place the chicken breasts between two sheets of plastic wrap. Use a meat mallet to pound them to an even thickness (about ½ inch). This ensures even cooking.
3. Make the Coating: In a bowl, combine the grated Parmesan cheese, panko breadcrumbs, garlic powder, onion powder, salt, black pepper, paprika, and chopped parsley. Mix well.
4. Prepare Egg Mixture: In another bowl, whisk together the egg and Dijon mustard until fully combined.
5. Coat Chicken: Dip each chicken breast into the egg mixture, ensuring it’s fully coated. Then, dredge it in the breadcrumb mixture, pressing gently to adhere.
6. Arrange on Baking Sheet: Place the coated chicken breasts on the prepared baking sheet. Drizzle olive oil over each piece to help them brown nicely.
7. Bake: Transfer the baking sheet to the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through and the crust is golden brown. An internal temperature of 165°F (74°C) is ideal.
8. Rest: Once done, remove the chicken from the oven and let it rest for about 5 minutes. This helps retain moisture.
9. Serve: Slice the chicken if desired and serve with lemon wedges for an added burst of flavor.

These steps will guide you in creating this incredible dish effortlessly!