Fused deposition modeling (FDM) is a popular additive manufacturing technique for producing three-dimensional objects through a sequential layering process. This technology has been extensively employed in the creation of prototypes and fabrication of customized components featuring complex geometry. FDM technology offers extensive compatibility with many thermoplastic materials, allowing for flexibility in material choice. However, the FDM uses the thermoplastic filament which is supplied to a heated nozzle, causing the polymer filament to melt. Although filament printing is typically trouble-free, the production of high-performance and customized filaments such as polymer composites, and material blends is still limited and expensive. Studies have shown that pellets can be utilized for this procedure, and they are more convenient to manufacture compared to filaments and provide benefits in terms of eliminating a pre-step of converting pellets into filaments, affordability, and material selection. This paper presents the possibility of producing 3D-printed components with a pellet 3D printer using bio-based carbon nanoparticles reinforced polylactic acid (PLA) composite. The carbon nanoparticles were synthesized at a temperature of 800 ℃ from groundnut shell powder through pyrolysis. The pellets were prepared using solvent casting by reinforcing 0.25 wt% of groundnut shell powder-derived carbon nanoparticles (GNSC) into polylactic acid (PLA). The tensile specimen was printed using a pellet extruder and the tensile strength of the PLA/GNSC composite was measured to be around 51.744 MPa. The results are promising for the advancement of 3D printed components via pellet 3D printers. The pellet extrusion 3D printing system exhibited excellent 3D printability, the ability to print composites reinforced with nanoparticles. This pellet extruder 3D printing system eliminates the need for filament production and therefore reduces filament manufacturing costs.