Rancho de Chimayo
Most of the communities around the forest have restaurants, notably Santa Fe which is one of the prime dining cities in the United States; see the pages for the communities themselves. An excellent restaurant not yet mentioned in a city page is Rancho de Chimayo, in the tiny town of Chimayo near the northwest corner of the Pecos Wilderness. Standard New Mexican fare red and green chile, stuffed sopaipillas, carne adovada, etc. well prepared and served, in a beautiful mountain setting. Service and preparation can deteriorate if you're in a large party; go in a small party if you can. On County road 98 in Chimayo; phone +1 505 351-4444 reservations suggested. Open for lunch and dinner 7 days May-October, Tuesday-Saturday Sunday? otherwise.
If you're planning on cooking your own food, be aware that selections in groceries and convenience stores in the smaller towns can be limited. Full-service groceries can be found in Los Alamos, Española, and of course Santa Fe.