How to Make It
Bring 4 qt. water to a boil in a stockpot over high heat. Add 1/4 cup salt; return to a boil. Add pasta; boil, stirring occasionally, 11 minutes or until al dente. Drain, reserving 1 cup pasta water.
Sprinkle chicken with 1 tsp. each salt and pepper. Cook chicken in hot oil in a large skillet over medium-high heat 4 to 5 minutes on each side or until golden. Remove chicken from skillet. Add tomatoes to skillet; cook, stirring often, 4 minutes. Stir in artichokes, 1/4 tsp. each salt and pepper, and 1/2 cup reserved pasta water. Reduce heat to medium, and cook, stirring often, 3 minutes or until tomatoes burst.
Stir pasta, spinach, and 3/4 cup cheese into tomato mixture. Add up to 1/2 cup remaining pasta water, stirring constantly, until thin sauce forms. Chop chicken; toss with pasta mixture. Top with remaining cheese.