Heat oil in a large skillet over medium. Add ground chicken, garlic, onion, salt, and pepper. Cook, stirring occasionally, until the chicken is cooked through and crumbly.
Toss in the carrots, cabbage, and green onions. Cook for another 4-5 minutes, until the veggies are just tender.
In a small bowl, combine sweet chili sauce, peanut butter, ginger, soy sauce, and red pepper flakes. Stir until smooth.
Pour the sauce and chopped cilantro into the skillet. Stir well to coat the chicken and veggies. Heat through for 1-2 minutes.
Spoon the filling into lettuce leaves. Fold and enjoy!