In a large skillet, heat the olive oil over medium heat. Add the chopped onion and sauté until softened, about 3-4 minutes.
Add the minced garlic and cook for another minute, until fragrant.
Stir in the ground chicken, cooking until it's browned and no longer pink, about 5-7 minutes.
Add the chili powder, cumin, paprika, salt, and black pepper, then pour in the chicken broth. Stir well to combine and let simmer for 3-4 minutes until the mixture is slightly thickened.
Arrange the mini taco shells on a baking sheet and fill each shell with the cooked chicken mixture.
Sprinkle shredded cheese over the top of each filled taco.
Bake in the preheated oven for 10-12 minutes, until the cheese is melted and the taco shells are crispy.
Remove from the oven and let cool for a few minutes before serving.
Top each taco with diced tomatoes, a dollop of sour cream, and a sprinkle of chopped cilantro.
Notes
Feel free to customize toppings based on your preference.