Dice the onion into small pieces first.
Chop the bell pepper the same size.
Mince your garlic cloves finely for maximum flavor.
Heat olive oil in your large skillet.
Add ground chicken and break it apart gently.
Cook until no pink remains, about 5-7 minutes.
Season with a pinch of salt.
Toss in onion and bell pepper now.
Cook until they soften, about 4 minutes.
Add minced garlic and stir for 30 seconds.
Pour in tomato sauce and tomato paste.
Add Cajun seasoning, paprika, and cayenne pepper.
Stir in brown sugar to balance the heat.
Mix everything together really well.
Let the mixture simmer for 10 minutes.
Stir occasionally so nothing sticks or burns.
The sauce should thicken up nicely.
Toast your hamburger buns if you like.
Spoon the mixture generously onto each bun.
Add toppings like pickles or cheese.