First, make the green sauce: In a large high powered blender or food processor, add in garlic, onion, jalapeno, cilantro, fresh lime juice, chicken broth, cumin, salt, and freshly ground black pepper. Blend or process until completely smooth. Set aside.
Place a large deep 10 inch skillet over medium high heat. Add in olive oil. Once hot, add in chicken thighs and season generously with freshly ground salt and pepper. Cook until browned 4-5 minutes, then flip and cook an additional 4-5 minutes. Remove from pan and transfer to a plate.
In the same skillet, add carrots and bell peppers. Sauté over medium heat for a few minutes to absorb pan flavors.
Slowly pour in the green sauce, bring to a simmer then fold in the rice, making sure it is evenly distributed in the pan. Add the browned chicken on top and nestle them into the sauce a bit. Once sauce is simmering, reduce heat to low, cover the skillet immediately and cook for 20-25 minutes.
After 20-25 minutes, most of the liquid should be absorbed and the rice should be cooked. Serve immediately. Garnish with cilantro, jalapeno slices, avocado slices and a drizzle of sour cream if you’d like.