Season your chicken on both sides with salt and pepper.
Add your avocado oil to a large heavy-bottomed skillet. Once it's shimmery, place your chicken in the oil and sear on both sides. You aren't cooking it in the skillet, just searing the outside.
Add your chicken to a deep pot. Pour in your chicken broth to cover the chicken. Turn the burner on high and bring to a boil. Once it comes to a boil, turn down to a simmer.
While your chicken is simmering, add the celery and carrots to the skillet you seared the chicken in over medium heat. Add in the garlic powder, onion powder, oregano, and parsley. If your rice package came with a seasoning packet, you can add it here if you'd like as well.
Once your carrots and celery have begun to soften, add in your flour. Stir to combine and cook briefly, about 1 minute.
Gently pour in the heavy cream, mixing to combine and letting it thicken. Once that is fully combined, gently pour in the milk, stirring to combine.
Continue to cook the mixture, stirring frequently until it has thickened.
Remove the chicken from the broth and shred or dice. Add it back into the broth.
Add your rice to the broth and chicken pot.
Add your thickened vegetable mixture to the pot with the chicken, broth, and rice. Simmer about 15 minutes, just until the rice is softened.
Serve with your favorite crackers and a sprinkle of fresh parsley and oregano!
Notes
WW Green Plan Points: 10 per serving (as written), 5 per serving if you replace the heavy cream with fat-free half & half.