- Coat both sides of fish with mixture of cornstarch and salt.
- Heat 3 Tbsp. vegetable oil in large skillet over medium-high heat. Cook fish 2 minutes on each side; remove and keep warm.
- Heat remaining 1 Tbsp. oil in same pan. Add bell pepper and tomato; stir-fry 2 minutes. Stir in chili sauce, pineapple juice and chunks and soy sauce.
- Spoon sauce over fish. Serve immediately.