Cook the Meat: Heat sesame oil in a large skillet over medium heat. Add ground chicken or turkey and onion. Cook until browned and onions are soft. Stir in garlic and ginger and cook for 1 more minute.
Add Vegetables: Stir in cabbage and carrots. Cook for 5β6 minutes until softened but still slightly crisp. Add soy sauce, rice vinegar, and black pepper. Toss to combine and remove from heat.
Make the Sweet & Sour Sauce: In a small saucepan, combine pineapple juice, rice vinegar, ketchup, soy sauce, and brown sugar. Bring to a simmer. Stir in cornstarch slurry and cook for 1β2 minutes until thickened and glossy.
Assemble the Bowls: Add a portion of cooked rice to each bowl. Top with the egg roll mixture.
Finish and Serve: Drizzle generously with sweet and sour sauce. Garnish with green onions, sesame seeds, or cilantro if desired. Serve immediately.