Drizzle the olive oil across the bottom of a large baking dish.
Add the dry pasta in an even layer, pour over the 32 ounce can of diced tomatoes, then add the 16 ounces of water. Stir so the pasta is submerged.
Nestle the chicken breasts on top of the pasta.
Spoon the ricotta over the chicken in dollops and scatter the basil on top.
Pour the 15 ounce can of diced tomatoes over everything, then sprinkle the garlic salt, onion powder and Italian seasoning evenly across the top.
Cover tightly with foil and bake about 20 minutes. Uncover and bake another 15 to 20 minutes, until the chicken reaches 165 degrees and the pasta is tender.
Rest 5 to 10 minutes, slice or shred the chicken back into the pasta, finish with lemon if using and stir everything. Serve when slightly cooled.