01 - Preheat oven to 400°F.
02 - Pat chicken breasts dry and season both sides with salt and pepper.
03 - Heat olive oil in a large oven-safe skillet over medium-high heat. Add chicken breasts and sear for 3-4 minutes per side until golden. Remove to a plate.
04 - In the same skillet, add onion and cook for 2 minutes until translucent. Add garlic and cook for 30 seconds.
05 - Add spinach and cook until wilted, about 2 minutes. Stir in chopped artichoke hearts and cook for 1 minute more.
06 - In a blender or food processor, combine cottage cheese, chicken broth, Parmesan, half the mozzarella, Italian herbs, and red pepper flakes. Blend until smooth.
07 - Pour the sauce into the skillet with the spinach-artichoke mixture. Stir to combine and bring to a gentle simmer.
08 - Nestle the seared chicken breasts into the sauce. Spoon some sauce over each piece. Sprinkle with remaining mozzarella cheese.
09 - Transfer the skillet to the oven and bake for 15–18 minutes, until the chicken is cooked through (internal temperature 165°F) and the sauce is bubbling.
10 - Let rest for 5 minutes before serving. Spoon sauce over chicken and garnish with extra Parmesan or fresh herbs, if desired.