Cook the pasta according to the directions on the box to desired firmness (or sauté zoodles/cook spaghetti squash)
Add oil to pan over medium heat, then sauté garlic, sage, and thyme for 15-30 seconds until fragrant
Add broth, pumpkin, ricotta, salt, and pepper. Stir, them simmer, stirring occasionally, while pasta is cooking
Preheat oven to broil and position rack 4 inches under broiler
Chop chives into small pieces and grate the parmesan cheese
Add 1/2 of the chives and 1/2 of the parmesan to the sauce and stir to combine
Drain pasta and add to sauce. Stir to combine
Place pan in oven and broil until slightly browned - about 5 min
Serve with the rest of the chives and parmesan sprinkled on top