As human activities continue to alter natural ecosystems, understanding how we modify resource availability has important implications for an organism’s fitness. While much of our understanding focuses on the consequences of resource limitation or supplementation on fitness, increasing evidence suggests that shifts in an organism’s feeding frequency also contributes to fitness. In this study, we evaluate how variation in feeding frequency (“consistent” diet- 3x/week, “fluctuating” diet- 2x/week, “gorge” diet- 1x/week) influences four metrics of amphibian fitness: (1) ability to avoid predators, (2) ability to defend against a common trematode parasite, (3) mass at metamorphosis, and (4) time to metamorphosis. We found that feeding frequency did not alter tadpole susceptibility to predation. In contrast, feeding frequency modified tadpole susceptibility to trematodes, mass, and time to metamorphosis. Despite holding food availability constant, tadpoles in the gorge and fluctuating diet were 32% and 18% more susceptible, respectively, to parasites compared to tadpoles in the consistent diet treatment. Similarly, tadpoles in the gorge and fluctuating diet were 11% and 8% smaller, respectively, compared to tadpoles in the consistent diet treatment. Finally, tadpoles in the gorge and fluctuating diet reached metamorphosis 42% and 28% slower, respectively, compared to tadpoles in the consistent diet treatment. Collectively, this study suggests that shifts in feeding frequency has the potential to influence multiple metrics of amphibian fitness. As variation in resource availability is expected to increase over time due to human activities, understanding the relative contribution of resource limitation/ supplementation vs. shifts in feeding frequency on fitness may have important conservation implications.