Combine chicken strips with olive oil, garlic powder, onion powder, paprika, salt, and pepper in a large bowl. Toss until well coated.
Heat a large skillet over medium heat and add the seasoned chicken. Cook for 6-8 minutes, stirring occasionally until fully cooked.
Pour sweet chili sauce over the chicken in the skillet and stir well. Allow to simmer for 2-3 minutes.
Warm the flour tortillas in a skillet or microwave for 15-20 seconds until pliable.
Place a portion of sweet chili chicken in the center of each tortilla. Top with shredded lettuce, diced tomatoes, shredded cheese, and chopped green onions. Add sour cream if desired.
Fold the sides of the tortilla in and roll it up tightly from the bottom to the top. Serve immediately or wrap in foil for a portable meal.