In a large bowl, combine the turmeric, black pepper, garlic powder, onion powder, and salt. Add the chicken thighs and toss until they are evenly coated with the spice mixture. Let marinate for at least 30 minutes, or up to 2 hours in the refrigerator for more flavor.
Heat the olive oil in a large skillet over medium-high heat. Once hot, add the marinated chicken thighs in a single layer. Cook for about 5-7 minutes on each side, or until the chicken is golden brown and cooked through (internal temperature should reach 165°F).
Remove the chicken from the skillet and set aside on a plate. In the same skillet, add the asparagus pieces and sauté for about 4-5 minutes, or until they are tender but still crisp.
Return the chicken to the skillet with the asparagus, drizzle with lemon juice, and toss gently to combine. Cook for an additional 1-2 minutes to heat through.
Serve hot, garnished with chopped parsley.