Begin by pounding the chicken breasts to an even thickness. Use paper towels to pat them dry.
In a large bowl, combine the flour, cornstarch, baking powder, salt, black pepper, paprika, garlic powder, and onion powder, whisking them together thoroughly.
In a separate bowl, whisk together the eggs and water to create the batter.
Take each chicken breast and first coat it in the flour mixture, followed by dipping it into the egg wash, and then coat it once more in the flour mixture for that extra crunch.
Heat vegetable oil in a deep skillet until it reaches 350°F (175°C). Fry the chicken breasts for 6–8 minutes per side, or until they are golden brown and cooked through (internal temperature should reach 165°F/74°C). Once cooked, drain the chicken on paper towels.
To prepare the sauce, sauté minced garlic in a saucepan over medium heat until it becomes fragrant. Then, add honey, soy sauce, and vinegar. Allow this mixture to come to a simmer before stirring in the cornstarch slurry to thicken the sauce. Cook until it becomes glossy and sticky.
Generously pour the hot honey garlic sauce over the crispy chicken breasts, ensuring they are well coated.
Slice the chicken and serve it with additional sauce spooned over the top. Optionally, garnish with chopped chives or parsley.