Food insecurity remains a critical issue globally, as highlighted by the Sustainable Development Goals (SDG 2). In 2023, nearly 25 million Nigerians faced food insecurity due to factors like insurgency affecting agricultural activities. This, therefore, worsens the food insecurity in the country. Thus, this study investigates the dynamics between household consumption expenditure patterns and food security in Nigeria over a decade (2010-2019). This was done by analysing four waves of secondary panel data of 4,000 nationally representative households of the Nigeria General Household Survey GHS - Panel collected by the National Bureau of Statistics in four waves over ten years from 2010 to 2019. Analytical tools used were descriptive statistics and the Food Security Index. The results of the consumption patterns of the respondents showed that the majority of the respondents were in the lowest band of per capita total expenditure and sectoral expenditures. The ratio of food secure to food insecure averages around 30% to 70% with a food security (surplus) index of 1.26 and food insecurity (shortfall) index of 0.53. Nigeria was food insecure during the period. The analysis concludes that boosting agricultural productivity, improving infrastructure, and addressing corruption are essential to enhance food security in Nigeria. The government is recommended to prioritize long-term strategies for food production, support vulnerable households, and leverage technological advancements to increase agricultural productivity. This study underscores the need for comprehensive policies to address the multifaceted challenges of food insecurity in Nigeria.