Pat chicken dry and season both sides with 1/2 teaspoon garlic powder, 1/2 teaspoon chili powder, 1/4 teaspoon cumin, and salt and pepper to taste.
Heat a large skillet over medium-high and add 1 tablespoon of the olive oil. Sear the chicken 3 minutes per side until golden brown but not fully cooked through, then remove and set aside.
Reduce heat to medium and add 1 tablespoon butter and the remaining 1 tablespoon olive oil to the skillet.
Add the rice blend and toast, stirring, for 1–2 minutes.
Stir in 1 teaspoon garlic salt, 1 teaspoon cumin, the juice of 1 lime, 1 3/4 cups chicken broth, 1 cup salsa, and the drained pinto beans. Bring to a boil.
Nestle the seared chicken breasts into the rice mixture, reduce heat to low, cover, and simmer for 15 minutes or until the rice is tender and liquid is absorbed.
Remove the lid and sprinkle the shredded Colby Jack cheese over the chicken. Replace the lid and let sit a few minutes until the cheese melts.
Top with sliced avocado, extra salsa, and diced green onions, then serve.