Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
In a large mixing bowl, combine olive oil, minced chipotle in adobo, cumin, smoked paprika, garlic powder, onion powder, salt, and pepper. Stir well to create a marinade.
Add the chicken thighs to the bowl and toss them in the marinade until well-coated.
Arrange the marinated chicken on one side of the prepared baking sheet.
On the other side of the baking sheet, add the sliced red bell pepper, green bell pepper, and red onion. Drizzle a little olive oil over the vegetables and season with salt and pepper. Toss to coat.
Bake in the preheated oven for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and the vegetables are tender and slightly charred.
Remove the baking sheet from the oven and let it cool for a few minutes.
While the chicken cools, warm the corn tortillas on a separate skillet over medium heat for about 30 seconds on each side until pliable.
Slice the cooked chicken into strips and assemble your tacos by placing chicken and roasted vegetables on each tortilla.
Garnish with fresh cilantro and serve with lime wedges on the side for squeezing.
Notes
Serve with fresh cilantro and lime wedges for added flavor.