Whisk together sauce: In a small bowl, combine peanut butter, sweetened condensed milk, soy sauce, and water. Stir until creamy.

Flatten chicken thighs: Use a meat mallet to gently flatten the boneless chicken thighs to about ½-inch thickness.

Prepare egg wash: In a shallow dish, mix together eggs, all-purpose flour, salt, and a tablespoon of peanut butter until smooth.

Coat with breadcrumbs: Dip each flattened chicken piece in the egg wash, then coat it with panko breadcrumbs.

Heat the oil: In a deep frying vessel, heat oil to 350°F.

Fry the chicken: Fry chicken in batches for 2-3 minutes per side until golden brown and crispy.

Drizzle with sauce: Slice the fried chicken and generously drizzle peanut sauce over the top before serving.