Pat the chicken dry and season both sides with salt, pepper, garlic powder and onion powder.
Place a large skillet over medium heat and coat lightly with cooking spray. Add the chicken and cook for 4-5 minutes per side, until golden brown and cooked through (internal temperature of 165°F). Work in batches if needed. Remove chicken from the skillet and set aside.
In the same skillet, spray additional oil and add the minced garlic. Sauté for 1 minute until fragrant then add the oregano, thyme, and crushed red pepper flakes sautéing an additional minute.
Pour in the low-sodium chicken broth and add the sun-dried tomatoes, bring to a simmer. Simmer for 2-3 minutes. Turn heat to low and whisk in the Greek yogurt until well combined.
Stir in the chopped spinach and cook until wilted, about 1-2 minutes. Remove from heat.
Place one-piece of chicken per plate, spoon ¼ of the sauce on the top, and sprinkle with ½ tablespoon parmesan.
Pair with quinoa, brown rice, or a side of steamed broccoli.