01 -
Toss chicken pieces with cornstarch until evenly coated.
02 -
Add vegetable oil to a large skillet to about 2.5 cm depth and heat over high. Working in batches, fry chicken for 3–4 minutes until cooked through and crisp but not browned. Remove to plate lined with paper towel.
03 -
Carefully pour off frying oil, leaving about 1 tablespoon in the pan for the sauce.
04 -
Add garlic and half of the green onions to the skillet and sauté for 30 seconds until fragrant.
05 -
Pour in pineapple juice, sweet chili sauce, white vinegar, and crushed red pepper flakes. Whisk to combine, bring to a boil, and simmer for 2–3 minutes until slightly thickened.
06 -
Return chicken to skillet, stirring to coat in sauce. Cook for 2 minutes until sauce thickens; if necessary, create a slurry with 1 teaspoon cornstarch and 1 tablespoon water, add to skillet, and stir until sauce is glossy and thickened.
07 -
Stir in remaining green onions and serve immediately.