Preheat your oven to 350°F.
While the oven heats, slice the onions and mushrooms.
This gives them time to soften as they cook.
In a bowl, combine the chicken with half of the Cajun seasoning and olive oil.
Ensure the chicken is coated well.
Let it sit for about 15 minutes.
Place the marinated chicken on a lined baking sheet.
Bake for approximately 25-30 minutes.
This allows the chicken to cook through while staying juicy.
In a skillet, melt butter over medium heat.
Add garlic, onions, and mushrooms, and sauté until fragrant.
Don’t rush this to fully develop their flavors.
Add shrimp to the skillet, sprinkle with remaining Cajun seasoning, and sauté until the shrimp is pink.
Avoid overcooking for the best texture.
Serve the chicken and shrimp together while hot!