Bring A Small Pot Of Salted Water To A Boil. Add Potato And Cook Until Tender But Still Firm, About 15 Minutes. Drain, Cool And Chop. Saute The Onion And Garlic In A Lightly Oiled Skillet Over Medium High Heat. When Onion Is Soft, Stir In The Spinach And Cook Until Wilted, About 2 Minutes. Reduce Heat To Medium And Pour In The Eggs. Cook Until The Bottom Has Set, About 2 Minutes. Stir In The Potatoes And Tomatoes; Sprinkle On The Salt, Pepper, Cayenne And Hot Sauce. Cook, Stirring Occasionally, Until Eggs Have Set. Sprinkle With Grated Cheese And Serve Warm.