• Oven - Preheat your oven to 425°F / 220°C / Gas Mark 6
• Prep chicken - Pat the chicken dry and season with salt, pepper, paprika, garlic, and onion powder on both sides.

  Note - If using chicken breasts, cut each breast horizontally into two, so you have two flat pieces.
  1 tsp Salt, 1 tsp Black Pepper, 1 tsp Paprika , ½ tsp Garlic powder, 1 tsp Onion powder
• Marinate - In a large bowl, combine the egg mixture ingredients with a whisk until smooth. Add the chicken pieces and coat them well with the mixture. Leave to marinate for 15 minutes on the counter or overnight in the fridge.
  1 large Egg, ½ tsp Paprika, ¼ tsp Garlic powder, 1 tsp Onion powder, ½ tsp Mustard paste, 1 tbsp Ketchup , ½ tsp Sriracha , ½ tsp Fine salt, ½ tsp Black pepper powder, ¼ cup All-purpose flour, 2 large Boneless, skinless chicken breast
• Breadcrumb mixture - On a shallow plate, add all the breadcrumb ingredients. Stir to combine.
  2 cup Breadcrumbs, ½ tsp Black pepper powder, ½ tsp Fine salt, ½ tsp Paprika , 1/2 cup Parmesan cheese
• Coat - Using a fork, pick one piece of chicken from the egg mixture and drop it into the breadcrumb mixture. Dredge it well, making sure to coat it well on all sides. Pick it up and dust off the excess.
• Tray - Place the breaded chicken on a baking sheet lined with parchment paper or aluminum foil. Please make sure to leave some space between them for air circulation.
• Bake - Transfer the chicken to the preheated oven and bake for about 20-25 minutes, or until they are golden brown and crispy.

Assemble

• Prep - While the chicken is baking, slice and toast the hamburger buns and set them aside. Wash and prepare any desired toppings, such as lettuce, tomato, pickles, or sauces.
• Rest - Once the chicken pieces are cooked, remove them from the oven and let them cool for a few minutes.
• Sandwich - Assemble the crispy chicken sandwiches by spreading mayonnaise or your preferred sauce on the bottom bun. Place a chicken on the sauce, followed by your desired toppings. Add the top bun.
  4 large Hamburger buns, 4 tbsp Burger sauce, 4 large Lettuce, 2 large Tomatoes , 1 large Cucumber, Plus pickles or other desired toppings
• Serve the baked crispy chicken sandwich burgers immediately, and enjoy!
• Feel free to customize the recipe by adding spices or herbs to the breading mixture or incorporating different sauces or seasonings into the sandwich. Enjoy your homemade crispy chicken sandwich burger!