Honey Mustard Sauce. Make the sauce by combining all the ingredients in a mason jar. Close the lid and give it a good shake, keep it in the fridge while you prepare the burgers.
Prep. Line up 3 bowls with flour, eggs, and panko mixed with paprika, garlic, and onion powder. Set aside.
Prepare the chicken. Place the chicken breasts on a wooden board or even surface, cover with plastic wrap and pound them lightly until even on both sides. Remove the plastic and rub the chicken generously with salt and pepper.
One by one coat the prepared chicken breasts in flour, then eggs, and finally panko. Make sure you thoroughly coat the chicken at each stage, especially the last one.
Heat vegetable oil (about ⅓ cup for 2 chicken breasts) in a skillet over high heat. Once the oil is hot, carefully place the chicken in the pan not touching each other (you may need to do it in batches, cleaning the pan surface after each batch with a paper towel). Cook each chicken breast for 3-4 minutes on both sides until golden brown and crispy. Remove from pan on a plate lined with paper towels to drain the excess oil.
Burger assembly. Prepare your station with lettuce and sliced vegetables, toast the buns last.
Assemble the burgers with favorite lettuce and vegetables, add the sauce on top of the chicken or both buns and enjoy.