Dice the chicken breasts into uniform, bite-sized pieces and generously coat them with Cajun seasoning. Set a large pot over medium heat and add olive oil.

In the same pot, add diced onions and minced garlic to the seasoned oil. Sauté for about 3-4 minutes until the onions turn translucent.

Add the seasoned chicken pieces to the pot and cook for about 5-7 minutes until golden brown and cooked through.

Stir in the orzo pasta and pour in chicken broth and heavy cream. Bring to a gentle simmer.

Reduce heat to low, cover the pot, and let it simmer for about 10-12 minutes until orzo is tender.

Check the sauce consistency; if too thick, add a splash of broth or cream. Stir in grated Parmesan cheese.