Heat a large nonstick skillet over medium heat.
Once hot, spray with cooking spray.
Stir in onion, carrot, and red bell pepper.
Cook, stirring regularly, for 5 minutes.
Add in coconut oil, ground chicken, and soy sauce.
Cook, breaking it up as you go, until the meat is cooked and no longer pink.
Stir in peanut sauce and lime juice.
Taste and re-season with salt or other spices, if necessary.
Scoop the filling into bibb or butter lettuce and top with green onions and sesame seeds.