Toss chicken with cumin, chili powder, smoked paprika, salt, and olive oil. Heat a large skillet over medium-high heat with a tablespoon of oil. Sear chicken 3–4 minutes per side until golden. Remove and set aside.
Reduce heat to medium. Add chopped onion to skillet and sauté 3–4 minutes until translucent. Add garlic and cook 30 seconds until fragrant.
Add rinsed rice to the skillet and stir to coat for about 1 minute. Pour in chicken broth, diced tomatoes with chiles, and tomato paste. Scrape up any browned bits from the pan.
Nestle seared chicken into the rice, bring to a simmer, cover, and reduce heat to low. Cook 15–18 minutes until rice is tender and chicken reaches 165°F.
Remove chicken to a cutting board and shred with two forks. Fluff rice and return shredded chicken to the skillet.
In a small saucepan, melt butter over medium heat. Whisk in flour and cook 1 minute. Slowly whisk in milk and simmer until slightly thickened. Stir in shredded cheese and cream cheese until smooth. Season with salt and pepper.
Pour warm queso over the chicken and rice and gently fold until coated. Warm through 1–2 minutes.
Top with cilantro, lime wedges, jalapeños, corn, black beans, and crunchy tortilla strips. Serve immediately.