Step 1

Preheat oven to 325 degrees F. Wrap tortillas in foil stacked in two packages of four. Place tortillas in hot oven to warm.

Step 2

Meanwhile, heat oil in a large skillet over medium-high heat. Add poblano, onion and garlic, and cook, stirring often until the vegetables are softened and beginning to brown, 5 to 8 minutes. Add chicken, and cook, breaking up into small pieces as it becomes opaque, until the chicken is completely cooked, 4 to 6 minutes.

Step 3

Sprinkle with chili powder, cumin, salt and chipotle, and stir to coat until fragrant, 30 to 90 seconds. Add tomato paste and water and stir until the tomato paste is dissolved into the water and it forms a sauce to coat the chicken mixture.

Step 4

Serve the chicken in the warm tortillas and top with desired toppings.