Pat your diced chicken dry with paper towels — this is the move that changes everything. Dry chicken gets golden instead of steamed. Mix your Cajun seasoning, garlic powder, onion powder, smoked paprika, thyme, and salt in a small bowl. Toss the chicken pieces with this spice blend until every piece is coated.
Heat a large skillet over medium-high heat and add your butter and olive oil together. Let them get hot for about 30 seconds — you want that pan ready to go. Once the butter's foaming, add your seasoned chicken pieces in a single layer. Don't crowd the pan or they'll steam instead of sear.
Cook for 6-8 minutes without moving them around too much. You'll hear the chicken sizzle and pop as it hits the hot pan — that's your cue it's actually cooking properly. Let those edges get golden and crispy before you stir. Mine always sticks a little and that's totally fine.
Stir the chicken and cook for another 2-3 minutes until it's cooked through but still tender inside. Pour in your chicken broth and lemon juice, scraping up any browned bits stuck to the bottom of the pan. Those bits are liquid gold for flavor — don't skip this part.
Reduce heat to medium and pour in your heavy cream, stirring gently to combine. Let everything simmer together for about 2 minutes, just until the sauce starts to thicken slightly. The sauce should coat the back of a spoon but still pour easily.
Add your shredded cheddar cheese and stir until it's completely melted and smooth. Cook for just 1-2 minutes more until your kitchen smells like warm, buttery, garlicky heaven. When that aroma hits, you know the chicken lazone recipe is ready to plate up.
Taste and adjust seasoning with extra salt or lemon juice if needed — this is your dish, so make it taste right to you. Serve immediately while everything's piping hot and the sauce is at its creamiest.