Combine the smoked paprika, chili powder, cumin, Italian seasoning, garlic powder, cayenne pepper, and salt in a small bowl. Mix well. This homemade spice mix really sets the tone for the dish.
Take your chicken thighs and pat them dry with paper towels (this helps them sear nicely). Coat both sides of the chicken generously with the Cajun seasoning. A light sprinkle of freshly ground black pepper at this stage makes a big difference, too.
Heat a large skillet over medium heat for about 3 minutes. Add the olive oil and swirl it around so it coats the bottom of the pan evenly. Lay the chicken thighs in the skillet and cook them on one side for 5 minutes without moving them.
Flip them over and lower the heat to medium-low, cooking for another 5-7 minutes until they’re completely cooked through. Use a meat thermometer to ensure the internal temperature hits 165°F. Once done, remove the chicken and set it aside.
Using the same skillet (don’t clean it, as those browned bits are packed with flavor), toss in the minced garlic. Sauté on medium heat for about 1-2 minutes until fragrant. Add the white wine and lemon juice, letting the mixture simmer and reduce slightly. Lower the heat and stir in the butter until the sauce is smooth.
Return the chicken to the skillet, spooning the aromatic sauce over the top. Sprinkle with freshly chopped parsley for a pop of color and added freshness.