Pat the chicken dry and toss with the garlic powder, onion powder, 3/4 tsp salt, and 1/2 tsp pepper.
Heat the olive oil in a 12-inch deep skillet over medium-high heat. Sear the chicken 3 minutes undisturbed, flip, and cook 3 to 4 minutes more until it reaches 165°F (74°C). Transfer to a plate.
Reduce heat to medium, melt the butter, and add the onion, carrots, celery, 3/4 tsp salt, and 1/4 tsp pepper. Cook 6 to 7 minutes until softened, scraping up the browned bits.
Add the garlic, thyme, and rosemary and stir 45 seconds. Stir in the flour for 60 seconds, then add the orzo and toast for 90 seconds.
Slowly pour in the broth while stirring. Bring to a simmer, reduce to medium-low, and cook uncovered 8 to 10 minutes, stirring every 90 to 120 seconds, until the orzo is al dente.
Stir in the warm milk, peas, and chicken with its juices. Cook on low for 2 minutes.
Turn off the heat and wait 60 seconds for the bubbling to stop. Fold in the blended cottage cheese and Parmesan until creamy. Rest 3 minutes, top with parsley, and serve.