Mince the chicken breasts in a blender until the texture is sticky and no large chunks remain.
Transfer the minced chicken to a bowl and mix in salt, pepper, garlic powder, and whisked egg until fully combined.
Test the seasoning by frying a small piece and adjusting salt if necessary.
Lightly grease your hands with oil and shape the mixture into small nugget-sized pieces.
Place the nuggets on a tray lined with parchment paper and freeze for 40-50 minutes (or longer if needed).In a separate bowl, whisk together flour, cornstarch, salt, black pepper, garlic powder, paprika, chili flakes, mustard, hot sauce, and ice-cold water to create a thick batter.
Place cornflour in a separate bowl for dry coating.Heat oil in a deep pan over medium-high heat to 170-180°C (340-360°F).
Coat each nugget first in dry cornflour, then dip into the wet batter, ensuring full coverage.
Carefully place the nuggets in hot oil and fry in batches for 3-4 minutes per side, until golden brown and crispy.
Remove and drain on paper towels.In a small bowl, mix mayonnaise, mustard, honey, salt, black pepper, and lemon juice until smooth.Serve the crispy nuggets hot with fries and the dipping sauce.