Combine the patty ingredients: add ground chicken breasts, dark chicken meat, breadcrumbs, light mayonnaise, parsley, Italian herbs, garlic, and paprika powder. Season the mixture to taste with salt and pepper.
Shape the patties: shape the chicken mixture into four patties, about ½-inch thick. Using a thumb, make an indent in your patties before cooking.*
Cook the chicken patties: Heat neutral oil in a skillet over medium-high heat. Add the patties, and cook for 5 minutes or until they are golden brown on the bottom.
Flip the patties and cook for another 5 minutes until they are cooked through, and the internal temperature reaches 165F.
Spread the desired amount of mayonnaise over the burger bun halves. Add the cooked patty onto the bottom half of the burger bun. Layer tomatoes, lettuce, and onions over the patty, and close the burger with the top bun.
Serve the burgers warm.
Notes
I always suggest mixing chicken breasts and dark chicken meat. The dark meat will make your burger patties juicy and add extra flavor. You can buy a mix of white and dark chicken meat in stores, or you can ask your butcher to grind thighs and legs for you if dark meat is not an option.
Making an indent in your patty (with your thumb) will prevent it from shrinking during cooking.
The burgers can be served with plain mayonnaise, but for extra flavor, you can combine your mayonnaise with mustard, ketchup, smoked paprika, and pickle juice until you have a nice and smooth sauce.